What the Doctor Required - The Freshest December

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User's Manual for the ARJ archiver program, April 1997 ARJ software and manual copyright (c) 1990-97 by ARJ Software. All rights reserved. ARJ version 2.55c BETA release ** IMPORTANT NEWS **************************************************** Users of ARJ should read the WHATSNEW.DOC and UPDATE.DOC files that contain information about the latest improvements to ARJ. A MAJOR change has been made to the ARJ BACKUP feature. ********************************************************************** TOPICS COVERED IN THIS DOCUMENT ------------------------------- DEDICATION INTRODUCTION NEW USERS TERMINOLOGY MAJOR FEATURES OF ARJ ARCHIVER BENCHMARKS RELEASE NOTES TECHNICAL NOTES ARJR AND DEARJ PROGRAMS SYSTEM REQUIREMENTS INSTALLATION QUICK START TO USING ARJ HOW TO CREATE AN EXECUTABLE SELF-EXTRACTING ARJ ARCHIVE CONVERTING OTHER ARCHIVE FILES TO ARJ FORMAT HOW TO USE ARJ ARJ LIMITATIONS IMPORTANT NOTES TIPS TO USING ARJ EFFICIENTLY USING ARJ WITHIN OTHER PROGRAMS ARJMENU PROGRAM USING ARJ AS A BACKUP PROGRAM BACKUP TYPE ARCHIVES AND BACKUP FILES CHAPTER ARCHIVES WINDOWS 95 LONG FILENAME SUPPORT ARJ-PROTECT DATA PROTECTION FEATURE ARJ ANSI COMMENT HANDLING THE FILESPEC "..." ARJ ERROR SITUATIONS ARJ DOS ERRORLEVELS ARJ USER ACTION PROMPTS ARJ ENVIRONMENT VARIABLE ARJ COMMAND LINE SYNTAX ARJ RESPONSE FILE SYNTAX ARCHIVE NAME WILDCARDING ARJ COMMANDS ARJ SWITCH OPTIONS ARJ COMMAND OPTIONS SAMPLE ARJ COMMANDS ARJ_SECURITY ENVELOPE KNOWN ARJ ISSUES/PROBLEMS ARJ ERROR MESSAGES COMMONLY ASKED QUESTIONS ARJ TECHNICAL SUPPORT ARJ AVAILABILITY ARJ INTERNET MAILING LIST ARJ WEB SUPPORT SDN EXTENSION FILES DISTRIBUTORS ACKNOWLEDGEMENTS USAGE AND DISTRIBUTION POLICY BRIEF BIOGRAPHY OF ARJ AUTHOR FINAL COMMENTS DEDICATION: The ARJ program is dedicated to God and to my family. From the beginning, our family decided that God would be the senior partner in our company and that our business practices would strive to reflect the principles that He has so graciously provided to the world in His Word. INTRODUCTION: ARJ is the result of a desire to use my interest in compression technology to produce an archiver for personal use on PCs and on minicomputers that provides power and excellent flexibility. This document is designed as an ARJ program reference manual and is not appropriate for novices to ARJ. The file named INTRO.DOC is intended for novices. Please note that the shareware versions of the ARJ programs may be slightly limited in functionality. See the UPDATE.DOC for more information. NEW USERS: Users new to the ARJ archiver should start reading the INTRO.DOC file instead of this document file. TERMINOLOGY: The following terms are used through this manual. ARCHIVE - This is a file containing one or more files in a compressed or non-compressed state and containing file related information such as filename and date-time last modified, etc. ARJ FILE - This is an archive created by ARJ. BACKUP TYPE ARCHIVE - This is an ARJ archive that has the internal backup flag turned on. This feature is obsolete after ARJ version 2.50a. Current and future versions of ARJ will ignore the special flag set on file backups. Replacing this backup archive scheme is the chapter archive scheme. CHAPTER ARCHIVE - This is an ARJ archive that contains one or more backup chapters. A chapter archive stores a full backup and a series of incremental backups in a manner that saves disk space by not storing duplicate files. A chapter archive allows the user to recover a directory of files as they were when the backup chapter was made. In other words, if daily backup chapters of a source directory were made from Monday to Friday, one could recover the source directory as it was on Wednesday. COMPRESSION - The process of encoding redundant information into data requiring less storage space. COMPRESSION PERCENTAGE/RATIO - The percentage compression reported by ARJ is a variation of one of the TWO standard methods of expressing compression ratio in the technical literature. ARJ uses the compressed size / original size ratio. The other method is the inverse ratio. When ARJ reports 96% as the compression ratio, which means that the compressed file is 96 percent of the original size (very little compression). Other archivers use their own methods. LHARC uses the same ratio as ARJ. EXTRACTION or UNCOMPRESSION - The processing of recreating the exact information that was previously compressed. SELF-EXTRACTION MODULE (SFX) - This is an archive that is an executable file that is capable of extracting self-contained files. TEXT MODE - In text mode, ARJ inputs the file using the C library text mode which translates the carriage return, linefeed control characters of MS-DOS to a single linefeed character. This saves space and provides the option for cross platform file extraction. On another platform, the host C library would change the single linefeed to the host text newline separator sequence. In addition, for platforms such as PRIMOS which set bit 8 in ASCII text characters, ARJ sets/resets bit 8 according to the platform extracted to. When extracting a text mode file to the same type of platform archived from, ARJ will NOT strip the 8-bit text to 7-bit text. VOLUMES - These are ARJ archives that are in sequence and have been created by a single ARJ command. Files in the volumes may span volumes in a split format. These volumes are usable archives. MAJOR FEATURES OF ARJ: Currently provides excellent compression in terms of size reduction compared to the leading archivers including PKZIP 1.10, PKZIP 2.04, PAK 2.51, ARC 7.0 (ARC PLUS), LHARC 1.13c, LHA 2.13, and ZOO 2.10. ARJ is particularly effective with database files and documents. The ability to process and archive up to 65,000 files at one time. The ability to select files for archival by type and/or attribute. Support for Windows 95 long filenames in the Windows 95 GUI DOS environment. Archive and individual file comments with the option of inputting comments from a file. ARJ has MS-DOS 3.x international language support for the proper casing of filenames and text. The ability to put the entire ARJ command line in a response type file as in "ARJ @command.rsp". 32 bit CRC file integrity check. DOS volume label support. Default storing of specified pathnames to allow recovery of a directory structure. Empty directory support. Backup support in the chapter archive scheme which allows a series of backups to be included in a single archive so that one can recover any one of the backups. The advantage of chapters is that files that have not changed are saved only once in the archive. Test new archive before overwriting the original archive option. Archives that can span diskettes. This allows the user to backup a full hard disk drive to multiple floppies. Recovery of individual files is convenient because each diskette archive is an individual archive except for the split file portion. No need to use SLICE with ARJ. In addition, ARJ in disk spanning mode can support the use of 3.5 HD diskettes formatted at higher capacities than 1.44 MBytes. Moreover, ARJ can build these disk spanning archives on the hard disk drive for later transfer to diskettes. Archive file re-ordering facility with the option of sorting by file size, file extension, CRC value, date-time modified, filename, pathname, compression ratio, file attribute and more. String searching with context display within archive files. Built-in facility to recover files from broken archives. Self-extraction feature that is internal to the ARJ runfile. The SFX module is full-featured with a built-in help screen. ARJ also includes a smaller SFXJR module with fewer features. Multiple volume self-extracting archives. The ability to embed command line type options inside self-extracting archives. Internal string data integrity check in ARJ to resist hacking a la LHARC to ICE. Archive security envelope "seal" feature to resist tampering with secured archives. This feature disallows ANY changes to a secured archive. Even the archive comments can NOT be changed without removing the "seal". Password option to encrypt archived files. Text mode data compression option to enable movement of text files from one host machine to another. Text mode also results in slightly greater file size reduction on MS-DOS machines. File extraction to screen in a paged mode to permit browsing through an archive. Specification of the files to be added to or exclude from an archive via one or more list files. In addition, ARJ can generate a list file. Specification of files to be excluded from processing by ARJ. Sub-directory recursion during compression and extraction. ARCHIVER BENCHMARKING: This is information for those who plan to publish benchmark test results comparing ARJ with other file archivers. The ARJ -jm compression is intended to demonstrate the best that ARJ can do in terms of size reduction. However, the ARJ -jm1 compression is almost as good in terms of size reduction. The ARJ -m2 compression is intended to compete with LHA 2.12. The ARJ -m3 compression is intended to compete with PKZIP 1.10. The ARJ -e option is necessary during size benchmarks because ARJ by default stores the entire specified pathname in the archive as opposed to other archivers which strip path specs. Example command: ARJ a benchmrk -e -jm1 files\*.* The very size of the ARJ runfile adds significantly to the compression and extraction times when testing smaller archives. RELEASE NOTES: The use of ARJ in a business, commercial, institutional, or government environment requires a license. However, business, commercial, institutional and government users may use ARJ for evaluation purposes for a period of 30 days. See the LICENSE.DOC for full details. The inclusion of any of the ARJ software (ARJ, ARJR, DEARJ, ARJSFX, ARJSFXV, ARJSFXJR, REARJ) with software and/or hardware for distribution requires a license. While evaluating ARJ, you should use the "-jt" (test archive) option to verify new ARJ archives of your data. This version has been tested under DOS 2.11, 3.3, 4.01, 5.0, 6.0, and 6.2x. It also runs under the DOS windows of Windows 3.x, Windows 95, OS/2 2.0, Warp 3, and Warp 4. Here is a suggested command that will test ARJ on all of your files: ARJ a testvol c:\ "-v360sdel testvol.*" -xtestvol.* -y -jf -jt1 -r TECHNICAL NOTES: A detailed technical description of the ARJ archive format is available in the UNARJ distribution archive. This archive contains a description of the archive header formats as well as C source code for an ARJ archive extractor and lister program. This source code has been made portable to several platforms including UNIX, NEXT, DOS, and AMIGA. ARJR, DEARJ, and REARJ PROGRAMS: The new programs ARJR and DEARJ are available to registered and licensed users of ARJ. ARJR is the ARJ program without the help screen and SFX modules. DEARJ is the ARJR program without the archive creation/modification functions, the "w" command, and the "-jt1" and "-jt2" switches. There are two versions of REARJ, the shareware version and the registered version. The registered version contains a number of additional enhancements including environment variable usage, !listfile capability and selection by file date-time. See the LICENSE.DOC and ORDERFRM.DOC for more information. UNARJ and DEARJ are NOT the same program. SYSTEM REQUIREMENTS: The ARJ software package is designed to work under DOS versions and DOS boxes from 2.11 and above. However, certain features have an OS limitation under DOS versions prior to DOS 3.0: access to the self-extractors and to the built-in help information. To get the ARJ help screens and the ARJ self-extraction creation to work, ARJ.EXE MUST be located in the CURRENT directory. This limitation exist only in newer versions of ARJ to save on memory usage. Within the Windows 95 DOS box environment, ARJ supports the use of Windows 95 long filenames. This feature ONLY works in the Windows 95 DOS box. It does not work under DOS 6.x nor does it work under Windows NT. INSTALLATION: I assume that you have a copy of the self-extracting ARJ module named ARJ###.EXE where "###" represents the ARJ version number. Typing ARJ### [RETURN] at the DOS command prompt will initiate the self-extraction feature. ARJ### will by default extract its files to the current directory. When ARJ### starts, you will see several lines of text describing ARJ and then a line asking if you wish to continue extraction. Entering "yes" or "y" will continue the extraction. If there are any duplicate filenames in the current directory, the program will prompt you for overwriting. You can enter "yes", "no", or "quit". To install the ARJ software, simply copy ARJ.EXE, REARJ.EXE, REARJ.CFG, ARJSORT.COM and optionally ARJCRYPT.COM to one of the directories named in the DOS PATH statement found in your AUTOEXEC.BAT. On many PCs, this directory may be C:\DOS or C:\BIN. With MS-DOS 3.0 and above, you can use path notation "\BIN\ARJ e archive" to use ARJ. ARJCRYPT.COM is ONLY found in versions of ARJ for USA use. You may, of course, prefer to use ARJ 1.00 or higher to extract the contents of ARJ###.EXE file manually. Example: ARJ e ARJ###.EXE \temp\ QUICK START TO USING ARJ: See the document INTRO.DOC. HOW TO CREATE AN EXECUTABLE SELF-EXTRACTING ARJ ARCHIVE: The command "ARJ y -je archive" will create a full featured self-extracting archive from an already built archive. The command "ARJ y -je1 archive" will create a smaller self-extracting archive. Syntax: ARJ y -je archive produces archive.exe The registered version of ARJ lets users create multiple volume self-extracting archives, Syntax: ARJ y -je archive -v360K produces archive.exe, archive.e01, archive.e02 .... Under DOS systems other than 2.11, 3.2, 3.3, 4.0, 5.0, 6.x, and 7.0, you may have to rename the self-extract module to ARJSFX.EXE to do the extraction. See the "-je" option for more information. CONVERTING OTHER ARCHIVE FILES TO ARJ FORMAT: Included with this software is the program REARJ. This program can be used to individually or collectively convert archive files from other formats to the ARJ format. The command "REARJ *.ZIP *.ARC *.LZH" will convert all ZIP, ARC, and LZH archives in the current directory to the ARJ format. See the REARJ.DOC for more information about REARJ. HOW TO USE ARJ: If you type ARJ [return], you will see a simple help screen. If you type ARJ -? [return], you will see more detailed help information. ARJ LIMITATIONS: ARJ will accept up to: 64 filenames/wildnames on command line 65000 filenames resulting from wildnames 16000 filenames/wildnames to exclude 16000 ARJ filenames resulting from wildnames 2048 character comments (up to 25 lines or 1 file) For compressing, ARJ requires approximately 300,000 bytes plus the memory necessary to store all of the pathnames to be archived when using the default compression method (-m1). For extracting, ARJ requires approximately 175,000 bytes plus. The program DEARJ (available to registered users) requires approximately 125,000 bytes plus. There is no limitation on the number of files that can be stored in one archive. However, each add command can only add a maximum of 16,000 files at a time depending upon memory availability. I expect that a normal maximum of 5,000 to 10,000 filenames can be handled without running out of memory during the compress phase. The new option "-hm" allows ARJ to archive up to 65,000 files at one time by using disk space or XMS memory instead of conventional memory. Example: ARJ a -r archive \*.* -hm ARJ currently does not see that wildnames like "C:*.*" and "C:\*.*" can actually represent the same thing. ARJ would expand each of those two wildnames into a list that could be up to twice as long as necessary. When updating an archive, ARJ creates a temporary file named ARJTEMP.$nn in the current directory or special work directory if specified (-hm!F:\). While ARJ is scanning a wildcard filespec, ARJ will change the name of the target archive to ARJTEMP.$nn while the scan is proceeding to avoid including the archive itself in an add or move command. Also, as a result, you cannot add a file named ARJTEMP.$nn to an ARJ archive. Please note that the name of this temporary file may change at a future revision of ARJ. IMPORTANT NOTES: When using the "-w" working directory switch, ARJ does not check on space availability before overwriting the original archive if it exists. Be sure that you have enough disk space for the new archive before using the "-w" switch. If ARJ aborts in this situation because of disk space, ARJ will keep the temporary archive. By default, ARJ does not see hidden or system files. ARJ will process system and hidden files when you either specify the "-a" switch or use the new "-hb" switch. Like LHARC and PKZIP, ARJ requires extra disk space to UPDATE an archive file. ARJ will backup the original archive while it creates the new archive, so enough room must be available for both archives at the same time. Unlike PKZIP, ARJ does not require additional work space when CREATING a new archive. Currently, ARJ will not extract overwriting a readonly file unless the "-ha" option is specified. TIPS TO USING ARJ EFFICIENTLY: You should use a software or hardware disk cache to speed up ARJ access. Diskette drives should NOT be write-delay enabled. Write-delay would prevent ARJ from verifying diskette writes. When archiving to diskettes, you should use the "-w" option to set a working directory on your RAMDRIVE or hard disk drive to speed up building the archive. You should use the "-jt" option when archiving to diskettes or when you really want to be sure that ARJ will be able to extract what you have archived. There are cases where your hardware or memory resident software will corrupt your work, so the "-jt" option is excellent insurance. If you have bad sectors on your diskettes and verify is turned off, DOS will not tell you about diskette errors until it is too late. These errors are NOT RECOVERABLE. Using the "-js" option saves time by not compressing archives of PKZIP, LHA, ARC, ZOO, ARJ, etc. You should use the "-e" option whenever you do not need to store pathnames in an archive that you are creating. This will save space. Convert an ARJ archive into a self-extracting archive with a command like the following: ARJ y archive -je To capture a comment from an ARJ archive, use the following command: ARJ e archive ... -zcomment.txt (the "..." is significant). ARJ has several compression methods that provide size/time tradeoffs. Method 4 "-m4" is about twice as fast as method 1. The "-jm1" and "-jm" options modify the "-m1" option to provide even greater compression at a cost in time. USING ARJ WITHIN OTHER PROGRAMS: Since ARJ uses over 300,000 bytes of memory during compression, it is difficult to use ARJ in a large application program unless that program swaps itself out of memory when it executes DOS commands like ARJ. However, there is at least one shareware program available that will automatically swap your large application program out of memory whenever it shells out to DOS to execute a command. The program SHROOM by Davis Augustine should be able to solve this memory problem for you. The latest version as of 03/11/92 is named SHROM19C.ZIP on Channel One BBS. According to the SHROOM documentation, you can reach the author at: CompuServe id 72230,3053 Davis Augustine P.O. Box 610 Sausalito, CA 94966-0610 This is not an endorsement of the product SHROOM. The easiest way I have found to use this product is to type: SHROOM COMMAND.COM SHROOM -v COMMAND.COM will let you see SHROOM in action when you shell out to execute a DOS command. ARJMENU PROGRAM: A program called ARJMENU by Michael McCombs is available. As far as I know, it is the only menu-driven interface program that supports ALL of the features of ARJ. This program is aimed at users who hate command line interfaces. ARJMENU allows the user to pick and choose ARJ options. The user does not have to remember the ARJ switch syntax. The current version of the program supports ARJ version 2.30. The author is no longer supporting this program. ARJ HELP HYPERTEXT PROGRAM: ARJ-Help is an electronic book (brand named Window Book (TM)) that allows the user to discover easily how to use ARJ. It runs under DOS. It is very fast and has a rich set of features which include full-text search, hypertext links, a table of contents that can be reorganized to your needs, a complete index, and much more. The current version can be found on some BBSes as ARJHLP24.EXE. Window Book, Inc. P.O. Box 390697 Cambridge MA 02139 USA TEL: 617-661-9515 or 800-524-0380. FAX: 617-354-3961 ARCHIVER UTILITIES THAT SUPPORT THE ARJ FORMAT: The following are some other utilities that facilitate the use of ARJ. This list is not all inclusive or is it meant as a personal recommendation. ARCHIVE MANAGER PRO - Archiver shell ARJMENU 1.x - ARJ shell SHEZ 8.x - Archiver shell ARCMASTER 6.x - Archiver shell ZGEN 1.x - Archiver shell ACZAR 1.x - Archiver shell ARJVIEW - ARJ shell AVIEW - BBS archive viewer WINZIP - Windows archiver shell WINDOWS COMMANDER - WIndows archiver shell A particularly useful ARJ support utility is SARJ (latest version is 1.12) by Frederic Taes. It improves upon ARJ compression by using ARJ to build "solid" archives. USING ARJ AS A BACKUP PROGRAM: ARJ can be used as a substitute for a backup program. Now ARJ includes an error recovery option (-hk) to help protect against many kinds of data errors. The most common cause of failure is bad diskettes. You should let ARJ test the archives ON the diskettes. Testing the archives before copying them to diskettes is not enough. Critical data should always be backed up two or more times. Please keep in mind that damage to compressed data is many times more serious than damage to uncompressed data. WARNING: You should NOT update multiple volume ARJ archives especially backup archives. Use a separate set of diskettes to do an incremental backup. The following partial command lines illustrate a full backup command, an incremental backup command, and a restore command. The only parts missing are the names of the files to backup/restore. ARJ a A:backup -r -vvas -a1 -b2 -hk -js -jt -jiC:\backup.inx -wC:\ -m3 ARJ a A:backup -r -vvas -a1 -b1 -hk -js -jt -jiC:\backup.inx -wC:\ -m3 ARJ x A:backup -vv -y You should familiarize yourself with the above switches so that you can modify the above command lines as needed. If you have a RAMDRIVE large enough, you should change the "-w" option to point to the RAMDRIVE. If you have enough free hard disk space, you can build all of the diskette volumes on the hard disk for later copying to diskette. In this case, you will need to change the name of the archive to "C:backup" or similar. The "-vvas" option should be changed to "-v360", "-v720" or whatever is appropriate for your diskette size. Please note that 360, 720, 1200, and 1440 are abbreviations for the standard diskette sizes. Other sizes will require your entering the entire number. Another change is to add the option "-y" which will turn off the "Ok to proceed ...." prompt. Lastly, if the "-w" option is pointing to the hard disk, you should remove the "-w" option entirely. ARJ a C:backup -r -v360 <other options> -m3 -y ***IMPORTANT*** Only a maximum of 100 volumes can be built on disk at one time because of the volume suffix rolling over at *.A99 to *.A00 when using default archive naming. However, if you specify the starting archive name with a suffix of ".000" or ".001", ARJ will create up to 1000 or 999 uniquely named volumes. ARJ a C:backup.000 -r ........... Both backup commands will pause for a "system command". You can execute DOS commands at this point. This is a suitable place to do a "dir a:" to make sure that your disk is formatted and has enough free space on it. You may need to execute "format a:" or "del a:\". A very useful command might be "QDR A:". QDR is a utility from Vernon Buerg. You will need to type "exit" to allow ARJ to continue. If the backup fails after completing one or more diskettes, you can restart at the next archive after the last successful volume. There are two methods to do this restart. If you have specified an index file with the "-ji" option during the failed backup, you can restart by retyping the EXACT SAME command line as before and adding the "-jn" option. This will cause ARJ to scan the previously written index file for the proper restart information. ARJ will automatically set the correct volume name. Example: ARJ a a:backup c:\ -r -vvas -jiINDEX.FIL ARJ a a:backup c:\ -r -vvas -jiINDEX.FIL -jn The second method is more complicated. Refer to the "-jn" and "-jx" descriptions for more details. For example, if the above full backup command failed during diskette two, on filename "DOS\MODE.COM" which was started at byte 125. This would be the correct command: ARJ a A:backup.A01 -r -vvas -a1 <other> -m4 -jx125 -jnDOS\MODE.COM The most error prone step is determining the correct "-jn" option. A common error concerns the use of the root directory symbol "\" with the "-jn" option. Verify the presence or absence of the root symbol "\" in the backup index file. If the restore fails after one or more diskettes, simply retype the same command as before but add the right ".Ann" suffix to the archive name. If ARJ has aborted because of a disk full on a file split between volumes, you will have to restart at the first volume that contains that file. BACKUP TYPE ARCHIVES AND BACKUP FILES: This type of archive is obsolete after ARJ version 2.50a. It is replaced by the chapter archive. CHAPTER ARCHIVES: This feature is useful when backing up frequently modified files. This new feature is designed to make the backup management of a directory or application easier. It allows the taking of a sequence of backup "snapshots" of a changing application or directory. A chapter archive can provide major space savings over using many separate archives for backup. For example, a chapter archive could be used to keep track of the state of a Windows 3.1 directory. An initial chapter backup could be made of the original Windows 3.1 installation. Then, whenever a new software package is installed, a new chapter snapshot could be taken. ARJ ac winback c:\windows\*.* -r -a1 -jt1 If a Windows problem develops, one can restore Windows back to any particular chapter for testing. ARJ x winback c:\ -y -jb5 restore chapter 5 This chapter feature is especially useful for software developers. Since a chapter archive can contain up to 250 chapters, the change history of a software source directory for a period of weeks can be maintained in a single archive. You could take four chapter snapshots per day for over two months to a single archive. This would allow you to restore your source directory to one or more points in time to help you track the appearance of software problems. See the "-jb" option for more details. WINDOWS 95 LONG FILENAME SUPPORT: This version of ARJ supports the use of long filenames under the Windows 95 GUI in the MS-DOS Prompt environment. It does not support long filenames under MS-DOS 6.22 and below. It supports long filenames ONLY when the Windows 95 GUI (graphical user interface) is running. In other words, there is no long filename support in Windows 95 MS-DOS mode (accessed from the Win95 shutdown menu). Moreover, there is NO long filename support in ARJ for Windows NT. The small ARJ self-extractor (-je1) does NOT support the handling of long filenames. The ARJSFX and ARJSFXV modules (-je) support long filename handling. However, they will only extract archived Win95 long filename files under Win95. If long filename files are being extracted to plain DOS, an error message will be displayed. They can be forced to extract the Win95 archived files with the "-j" option. For compatibility with MS-DOS and older versions of ARJ, ARJ can create a dual-name compatibility ARJ archive. This is an archive with both shortnames and longnames stored in it. The longnames are stored in the file comment field. New versions of ARJ will treat the dual-name archive according to the operating system environment. In other words, under MS-DOS, a dual-name archive will look like a shortname archive. Under Win95, a dual-name archive will look like a longname archive. This is also true of the ARJSFX and ARJSFXV modules (-je). For efficiency reasons ARJ does not repeatedly check for file system support of long filenames. ARJ only tests the "C:" file system. An error may occur if ARJ under Win95 tries to access a disk drive that does not support long filename handling. The "-hf" option can be used to force ARJ to use the standard 8.3 filename APIs instead of the longname APIs. There are three new options "-hf", "-hf1", and "-hf2" that provide choices in the handling of long filenames. See the discussion of those options below for more information. ARJ will save Win95 long filenames in the letter case they are stored on disk; however, all filename matching is done without regard to case. In other words, "ThisName.Ext" matches "thisNAME.ext". When archiving files under Windows 95, be sure to EXCLUDE files from processing that are OPEN such as WIN386.SWP. REMINDER: When specifying filenames with embedded blanks or symbols like ">", "<", or "|" on the command line, you MUST quote the filenames. Examples: ARJ a archive "C:\Program Files\*.*" -r ARJ c archive "<<<*" -jz -jb For Windows 95 disaster recovery, I make use of the program DOSLFNBK.EXE 1.5 by D. J. Murdoch. With this program while in plain DOS, you can save all of the long filenames to BACKUP.LFN. Then you can use ARJ or any other DOS backup scheme to backup your system including the BACKUP.LFN. Here is a brief list of steps to backup and restore: 1) Make a Win95 startup diskette. 2) Shutdown to MS DOS mode. 3) While you are on the C: drive, execute "DOSLFNBK C:\". Change to the D: drive (if any) and execute "DOSLFNBK D:\". Execute DOSLFNBK for each drive on each drive. 4) Use ARJ or other DOS backup program to backup ALL of the files. Example: ARJ a A:backup C:\*.* D:\*.* -r -a1 -jt1 -va -jf CAUTION: For important backups, I always make TWO BACKUPS of my system. All too often, one or more files will not restore correctly because of some data error (MURPHY'S LAW in action). 5) Save ARJ.EXE or your backup program to diskettes in a restorable form. 6) Backup finished. 1) Boot from your Win95 startup diskette. 2) Execute "SYS C:" from the A: drive to re-install the boot. 3) Install ARJ.EXE or your backup program on the hard drive. 4) Restore all of the files. Example: ARJ x A:backup -v -jf -y -ha 5) On each drive, execute "DOSLFNBK /r" to restore the long filenames. 6) Restore finished. ARJ-PROTECT DATA PROTECTION FEATURE: With this version, ARJ can repair "protected" archives that suffer from slight amounts of data damage (CRC error, bad header, etc). An ARJ archive is "protected" with the "-hk" option. With the "-hk" option, ARJ will generate a separate ARJ data protection file. This protection file is REQUIRED in order to repair damaged ARJ archives. The size of this file ranges from a minimum of 4096 bytes and upwards. For larger archives, the protection file size is typically less than one percent of the archive file size. For this release, the protection file is a separate file. This avoids the problem of uploading unnecessary data to BBSes and ftp sites. The name of the protection file is based upon the archive name plus the extension ".XRJ". Volume protection filenames end in ".X01", etc. This protection feature is sector based and allows repair due to typical types of disk corruption (bad sector, virus damage, cross links, etc). This type of sector protection is NOT effective for most data transmission problems where data is missing from the middle of a transmission. Technically, this protection feature uses a series of XOR sums and checksums in order to allow repairs. Larger archives are logically treated as several streams of data. ARJ can protect each "stream" from one or two damaged sections 1024 bytes in size. However, for large archives (1 MB or larger) ARJ can sometimes repair up to four damaged sections per MByte. The "-hk1, "-hk2" ... "-hk9" options can offer more data protection at the cost of a proportionately larger protection file. The "-hk" option sets ARJ to build a protection file. The "q" command is used to repair a damaged archive. The repaired archive is named ARJFIXED.ARJ. Example: ARJ a archive -hk generates archive.xrj ARJ q archive repairs archive.arj ARJ ANSI COMMENT HANDLING: At version 2.55, ARJ will use its own ANSI sequence display handler to display ARJ comments. In previous versions, ARJ depended upon the "-ja" option and an installed ANSI.SYS driver to handle the ANSI escape sequences. The "-ja" option has a new function now. The "-ja" option will set the "P" command to display files using the new ANSI sequence display handler. The ARJSFXV module (-je -v) also will display ANSI comments now. Please note that the ARJ comment field size is limited to about 2K bytes. THE FILESPEC "...": Several times in this document and the UPDATE.DOC file, there is mention of the filespec "..." (not to be confused with my use of "...." in this document to mean "and so on"). This filespec is chosen so as not to match any existing filename. ARJ will NOT generate an error or warning for not matching "..." specifically. This is a problem when using ARJ on a NOVELL network as the filespec "..." is a valid directory name. A partial workaround is to specify a non-existent filespec such as "@@@" in place of "...". Or you may use the "-hn" option to specify a name that is not to match any filename. ARJ ERROR SITUATIONS: ADD: If a user specified file is not found during an add, ARJ will continue processing, and will keep the archive and terminate with an error condition. Note that files specified within an ARJ listfile that are not found during an add will NOT trigger an error unless the "-hl" option is also specified. In a disk full condition or any other file i/o error, ARJ will promptly terminate with an error condition and delete the temporary archive file unless the user has specified the "-jk" switch. MOVE: ARJ will only delete files that have been successfully added to the archive. If you have specified the "-jt" (test) switch, ARJ will abort on any error. If you specify the "-jk" switch, ARJ will keep the temporary archive upon an abort. EXTRACT: In a disk full condition or any other file i/o error, ARJ will promptly terminate with an error condition and delete the current output file. CRC ERRORS OR BAD FILE DATA: In the case where an ARJ archive has been corrupted, ARJ will report a CRC error or a Bad file data error. These corruptions can be the result of an unreliable diskette, a computer memory problem, a file transfer glitch, or incompatible CACHING software. Most of these errors are the result of file transfer glitches and bad diskettes. A few are the result of an incompatible interaction with SUPER PCKWIK 3.3 advanced diskette support or Windows 3.x. Individual files in an archive that are affected by the CRC or Bad file data errors CANNOT be recovered. Other files in a damaged archive can be recovered by extracting them using the "-jr" option. However, with some preventative action as in the use of the -hk option to generate a data damage protection file, slightly corrupted ARJ archives can be fully repaired and all damaged files recovered. CRITICAL ERROR HANDLER: ARJ sets up an interactive critical error handler to handle DOS critical errors like "sector not found" and "drive not ready". When a critical error occurs, ARJ will prompt the user with the message "Retry Y/N?". The user may retry the failed operation by pressing "Y". Pressing "N" will fail the operation or abort to DOS depending upon the version of DOS. The user can press Control BREAK to abort to DOS. ARJ DOS ERRORLEVELS: ARJ returns a number of DOS errorlevels for different situations. 0 -> success 1 -> warning (specified file to add to archive not found, specified file to list, extract, etc., not found, or answering negatively to "OK to proceed to next volume...." prompt) 2 -> fatal error 3 -> CRC error (header or file CRC error) 4 -> ARJ-SECURITY error or attempt to update an ARJ-SECURED archive 5 -> disk full or write error 6 -> cannot open archive or file 7 -> simple user error (bad parameters) 8 -> not enough memory 9 -> not an ARJ archive 10 -> XMS memory error (read or write) 11 -> user control break Please note that DOS batchfiles have a unique method of testing for a DOS errorlevel. The batch statement IF ERRORLEVEL 0 .... means if the errorlevel is EQUAL TO or GREATER THAN 0. Generally, one should test for the highest possible errorlevels first and proceed lower as in: ARJ a archive *.* if errorlevel 9 goto not_arj if errorlevel 8 goto no_memory . . . if errorlevel 1 goto minor_error type ARJ command successful ARJ USER ACTION PROMPTS: ARJ prompts the user for action at certain times. There are several types of prompts. One is for yes/no permission, another is for a new filename, another is for archive comments, and one other is for search strings. The ARJ yes/no user prompts provide a lot of flexibility. In addition to the normal yes and no responses, ARJ also accepts the following responses: quit, always, skip, global, and command. "Global" sets ARJ to inhibit all subsequent user prompts by assuming YES for all queries as if "-y" were specified. "Always" sets ARJ to assume YES for subsequent queries of the same class. For example, answering ALWAYS to the overwrite query will assume YES for ALL subsequent overwrite queries. "Skip" sets ARJ to assume NO for ALL subsequent queries of the same class. After "always" or "skip" responses, subsequent user prompt messages will still be output to the screen but no user response will be accepted. "Command" prompts for one DOS command and then executes it. ARJ then returns to expect an answer to the current yes/no query. You should keep the query in mind as ARJ does NOT always redisplay the full query message. Since ARJ uses STDIN for user input, be careful about typing ahead anticipating prompts. ARJ may prompt you for an unexpected action and use your earlier input. The "-jyy" option lets you change the prompting modes to single character query mode. See the section on "-jy" for more information. ARJ ENVIRONMENT VARIABLE: ARJ will first look for an environment variable named ARJ_SW and use its value as switch options for ARJ. If ARJ finds such an environment variable, it will display a message to that effect. You can inhibit ARJ from using this environment variable by using the "-+" option. You can also set the name of the environment variable with the "-+" option as in ARJ a -+ARJ_SW2 archive. SET ARJ_SW=<switches> Example: SET ARJ_SW=-w\temp -k -e Do NOT add any blanks after the variable name ARJ_SW. As in LHARC, command line switches can be selected to override ARJ_SW settings. ARJ will allow you to use a different switch character "-" or "/" in ARJ_SW and in the command line except when using the "-ju" (unix) option. If the ARJ_SW environment variable specifies a filename (text not beginning with a switch character), ARJ will open that filename and scan it looking for a line of text that begins in column 1 with the same letter as the ARJ command being executed. The following text is processed as the ARJ_SW switches. This allows each ARJ command to have its own switch settings. In addition, ARJ will also look for the "+" (plus) symbol in column 1 to use as a miscellaneous switch string. This string will be added to any command switch string found if any. If no command switch string is found, ARJ will use the miscellaneous switch string as the ARJ_SW switch settings. NOTE that the "+" switch settings will NOT be used if the "+" string occurs below the command switch string. SET ARJ_SW=C:\ARJ\ARJ.CFG C:\ARJ\ARJ.CFG contains: a -jm1 -jt -i1 c -zcomment.txt + -jv l -jp e -i1 AND is equivalent to: a -jm1 -jt -i1 c -zcomment.txt l -jp -jv e -i1 -jv f -jv v -jv all other commands . . . In the above example, any ARJ "a" commands will use "-jm1 -jt -i1" as the ARJ_SW switch options. The ARJ_SW variable or the ARJ_SW configuration file switch settings may NOT have quoted switches such as "-vasformat a:". ARJ COMMAND LINE SYNTAX: ARJ <command> [-<switch>[-|+|<option>]....] <archive_name>[.ARJ] [<base_directory_name>\] [<!list_name>|<path_name>|<wild_name>....] or ARJ @response_filename [-&] | [-+] | [-+environment_variable] Commands and switches can be entered in upper or lower case. Switches can be placed anywhere after the command ARJ. ARJ supports the use of either "-" or "/" as the switch option character. The first occurrence of either "-" or "/" that ARJ encounters in the ARJ_SW variable will determine the switch symbol for processing ARJ_SW. The first occurrence of either "-" or "/" that ARJ encounters in the command line will determine the switch symbol for processing the command line except when the "-ju" (unix) option has been specified in ARJ_SW. You may NOT mix and match switch symbols. Throughout this document, the symbol "/" may be substituted for "-" in switch usage. Examples: ARJ a A:archive *.* /va /r is correct ARJ a A:archive *.* /va -r IS INCORRECT USAGE! Switches specified on the command line will either toggle or override switches specified with the ARJ_SW environment variable. Switch usage is identical to that of LHARC. "-s+" turns on switch "s". "-s-" turns off switch "s". "-s" toggles the state of switch "s". "-sname" provides the name argument for switch "-s". "--" skip processing of any more switch options. Switch options CAN be combined to save command line length. However, some switch options take optional string arguments and therefore, must be the last option in a combined argument token string because ARJ accepts the rest of the argument token as the optional argument. You can combine "-r" and "-i" to make "-ri". You can combine "-wd:\" and "-i" with "-iwd:\", because the switch option taking the string argument is last. Please note that switches that ONLY accept the "+", "-", "0", "1", "2" modifiers can be combined in any order. The following switches must be last in a combined switch argument: -g, -l, -m, -o, -t, -v, -w, -x, -z, -!, -$, -h#, -hb, -hc, -hg, -hk, -hm, -hn, -hx, -jb, -jc, -jd, -jh, -ji, -jn, -jq, -jp, -js, -jw, -jx, -jy, -jz. WARNING: The "j" in "-jX" option switches is a SHIFT symbol. Therefore, a combined "-jatv" is a combination of "-ja", "-jt", and "-jv", since the "j" shifts the meaning of subsequent symbols in the argument token string. The use of more than ONE "j" shift symbol per argument token string is NOT supported for future versions. Examples: -rijvta <=> -r -i -jv -jt -ja -i1kwd:\ <=> -i1 -k -wd:\ ARJ will accept an ending "-" on most switches such as "-w-". The "-x" switch option is one exception. The one caveat is that for switches that support an optional argument such as "-wd:\" or "-t1", that switch option must NOT be followed by a concatenated switch option such as "-w-r". An argument token string such is "-rikw-" is acceptable because the "-w" option is the last one. One special switch combination is the "-jyyr" combination. You can turn off the "y" and "r" modifiers with "-jyyr-". The switch option "--" tells ARJ that there are no more switch options to process in the current command line. This is useful when you need to enter filenames beginning with "-". Example: ARJ a archive -- -testfile The standard ARJ file suffix is ".ARJ". Subsequent multiple volume archives end in ".A01", ".A02", etc, up to .A99, .A00, .A01. It is possible to have multiple volumes start at ".001" and go up to ".999". The ARJ command must be the first non-switch argument after "ARJ". The ARJ archive name must be the first filename on the command line. The base directory, if any, must be the second filename argument. The switches and other filenames can be in any order. The base directory name should end with "\" (backslash) or ":" (colon). However, ARJ will still accept directory names without the "\" character if the directory already exists. This feature is limited to the add type and extract type commands. Wild_names follow MS-DOS convention. "*.*" means all files. "*.DOC" means all files with an extension of ".DOC". "?B*.*" means all files with a second character of "B". The default for <wild_name> for all commands except for "d" is "*.*". For the add, move, freshen and update commands, filename matching in the archive requires an exact path match depending upon the "-e" option. For non-update commands, specified filenames with paths will force a full pathname match. You can supply one or more filenames for files containing lists of files to be added to an archive. The filenames must be listed one per line with no leading or trailing blanks. The list filename(s) must be prefixed with "!". If you want to archive a filename beginning with !, you must use the "-!" option to set a new list file character. You can exclude filenames/wildnames from the list of filenames to be processed by ARJ. Example: ARJ a software *.* -x*.exe -x*.obj adds all files in the current directory except .EXE and .OBJ files. REMINDER: When specifying filenames with embedded blanks or symbols like ">", "<", or "|" on the command line, you MUST quote the filenames. Examples: ARJ a archive "C:\Program Files\*.*" -r ARJ c archive "<<<*" -jz -jb ARJ RESPONSE FILE SYNTAX: ARJ @response_filename [-&] | [-+] | [-+environment_variable] ARJ will accept an ARJ command line from a response file as in "ARJ @command.rsp". The "@" symbol indicates that the appended name is the name of the response file. In this case, the file is command.rsp. The response file symbol cannot be changed. Only one ARJ command line can be processed per response file. The response file should contain the ARJ command line minus the initial "ARJ". The command line may be split over as many lines as necessary. The response file feature will NOT accept QUOTED command line options. Options with embedded blanks ("-vasTEST X") will not be processed as expected. See the "-@" option for help on options with blanks. When using the response file feature, ARJ will accept only the "-+", and "-&" switch options on the DOS command line along with the response file name. All other command options must be specified in the response file or in the ARJ environment variable. To better support long filenames, ARJ provides the "-@" option to handle the processing of filenames and switch options that contain embedded spaces. The "-@" switch option enables the interpretation of a text line in an ARJ response file as a single token. In other words, when ARJ scans an "-@" option, it will process the NEXT text line in the response file as a single token including all embedded, leading, and trailing blanks. ARJ will continue to process each subsequent text line in the same manner. If ARJ scans a subsequent "-@" option, ARJ will revert to its normal multiple tokens per line processing. Please note that the ARJ command line whether or not in the response file is still limited to 64 filenames or wildnames. The listfile feature should be used to specify more than 64 filenames or wildnames. ARCHIVE NAME WILDCARDING: You can specify a wildcard for the archive name such as "*.ARJ" for all ARJ commands except for the add commands (a, f, j, m, u). If you also specify the "-r" switch, ARJ will search subdirectories for ARJ archives (*.ARJ) also. Example: ARJ l -r * will list all of your *.ARJ files. ARJ c *.arj -zbbs.cmt will comment all of your archives. At 2.55c, the list of filenames that ARJ builds internally for archiving is now affected by the "-o" and "-b" and "-hb" options. Prior to 2.55c, ARJ would include all matching filenames in its internal list regardless of the "-o" and "-b" settings. Then during archival, ARJ would select from its internal list based upon the "-o" and "-b" and "-hb" options. Now ARJ uses the "-o" and "-b" and "-hb" options while it is building the internal list. The advantage with this method is the need for less memory to handle fewer files. For example, when doing a full backup of the C drive, ARJ builds an internal list of filenames for all of the files on drive C. When doing an incremental backup (-b, -b1), ARJ builds a list of filenames for only the files that have the archive bit set. In prior versions of ARJ, ARJ would build the same list regardless of the "-b" setting. ARJ wildcarding can differ according to the operating system environment. When scanning the file system for filenames to add/update an archive, ARJ uses the internal operating system wildcard matching functions. When scanning an ARJ archive (list, extract and so on), ARJ uses its own wildcard matching function. This internal ARJ function is identical to the standard DOS wildcard matching. Windows 95 and Windows NT use a slightly more complex wildcard matching function. In Windows 95, it is possible to specify a wildcard specification of "a*d*c". This would match ARJ.DOC, ARJDISP.DOC, and others. As of ARJ 2.55c, ARJ will handle up to 65,000 filenames. Because ARJ checks for duplicate filenames when necessary, processing over 20,000 filenames may slow down as the number of filenames processed increase. ARJ processes wildcards most efficiently when specified as separate command line wildcards inclusive of drive letters. Example: ARJ a backup C:\*.* D:\*.* E:\*.* -r -a1 If each drive letter is unique, ARJ will not need to check for duplicates and can proceed faster. This speedup does not work when using listfiles. ARJ COMMANDS: ac: Add Chapter to archive This is a new two character command for ARJ. It is actually an abbreviation for the following command and switch options: "u -u2 -jb". The "ac" command will add a chapter backup to a new archive or add a new chapter (updating) to a chapter archive. Example: ARJ ac archive c:\dir\*.* -r -jt The advantage of a chapter archive is that you can make numerous full backups (chapters) to a SINGLE archive. Major space savings will result when some files do not change from backup to backup. See the "-jb" option for more details. a: Add files to archive This is the basic command to add disk files to an ARJ archive. You can specify 0 to 64 filename arguments (one can be a destination directory). The arguments can be wildnames. If you specify the "-r" switch (recurse subdirectories), ARJ will add all of the files in all of the subdirectories that match the specified wildname. Example: ARJ a archive subdir\*.* Archive all files in directory "subdir". For maximum compression, use the "-jm" switch option. b: execute Batch or DOS command The ARJ b command allows a user to execute a DOS command on selected files in an archive. The ARJ b command will prompt for a DOS command string to execute per selected file. By default ARJ will extract the selected files to the filename ARJTEMP.$$$. This filename can be changed with the "-jw" option. The base directory option is ignored by the ARJ b command. The output file will be deleted by ARJ after the DOS command is executed. Examples: ARJ b archive ARJ b archive file.exe -jwtemp\tempfile This option can substitute for a simple extract and run command where the file to be extracted is an executable. You would specify a temporary executable name as the output name and use that name as the DOS command to be executed. Example: ARJ b archive file.exe -jwTEMP.EXE TEMP arguments You can supply the DOS command string on the command line with the "-jq" option. Switch options which have embedded blanks must be enclosed by double quote marks. Examples: ARJ b archive file.exe -jwTEMP.EXE -jqTEMP ARJ b archive *.c "-jqgrep text ARJTEMP.$$$" c: Comment archive files This command allows you to comment the header and individual files. ARJ will prompt you for each comment. The user will be prompted for up to 25 lines for each comment. A line containing only a [return] will terminate the comment. The user can choose to input comment data from a file by entering the comment filename preceded by an "!" as in "!archive.txt" starting in column 1 of the first comment line. This file is read as a text file. The lines in the text can be up to 2048 bytes long. Only the first 2048 bytes of the file will be accepted by ARJ. To erase a comment from an archive, type [space] [return] on the first comment line and [return] on the second comment line. To strip archive or file comments from an archive, you can use the NUL file feature of MS-DOS. Examples: ARJ c archive -zNUL strips archive comment ARJ c archive name -jzNUL strips comment for "name" ARJ c archive -jzNUL strips all file comments ARJ c archive -zNUL -jzNUL strips all comments To add only the archive comment and not file comments, use the following command: ARJ c archive -z To add only the archive comment at the command line, use the following command: ARJ c archive -zcomment.txt You may also comment an archive with the "a", "f", "m", "u" commands. ARJ a -zcomment.txt archive *.txt d: Delete files from archive This command allows you to delete files from the archive. When wildcard selection is not suitable, you can use the "-q" switch to set ARJ to prompt you for deletion for each file selected. These deleted files are physically removed from the archive. Example: ARJ d archive *.c Delete all files in archive ending in ".c". ARJ d -q archive *.c Prompt before deleting each file ending in ".c". If specify "*.*" as the filespec, ARJ will prompt for permission to delete. You can specify the "-y" or "-jyd" options to inhibit the delete prompt. If ARJ removes all files from an archive, it will delete the empty archive. The delete command normally only deletes files of the last chapter in chapter archives. You can specify the "-n" (new) option to delete the files in the archive that DO NOT EXIST on the disk. You can use the same "-n" option with "ARJ l" to list the files that DO NOT EXIST on the disk. This is useful in synchronizing an archive to a directory along with an update command. Examples: ARJ d archive *.* -n ARJ l archive temp\ *.doc -n ARJ d archive temp\ *.doc -n dc: Delete last Chapter from archive This is a new two character command for ARJ. It is actually an abbreviation for the following command and switch options: "d -jb". The "dc" command will delete the last chapter in an archive using the specified file wildcard. Normally, that wildcard should be "*.*". Example: ARJ dc archive *.* e: Extract files from archive This command will extract one or more files from the archive to the current directory or base directory if specified. ARJ will prompt the user before overwriting existing files unless the user specifies the "-y" switch. If the user gives a "no" answer, ARJ will prompt for a new filename. If the user enters a single [return] instead of a filename, ARJ will skip the current file extraction. Example: ARJ e archive soft\ *.c Extract all files ending in ".c" to subdirectory "soft". When extracting a file located on multiple volumes, ARJ may prompt the user with an "Append? " prompt. This will usually occur with files split across volumes. You will also need to specify the "-v" switch to set ARJ to continue to the next volume of a series of volumes. When extracting from one of a series of multiple volumes on a diskette, it is easier to use the wildcard "*.*" to specify the archive as in: ARJ e archive A:*.* filespecs If you wish to extract only a portion of an archive and that portion is a directory containing directories, you should use the "-p1" switch. See the "-p" switch for more information. The ARJ e and ARJ x commands now accept the "-d" option to provide an extract and delete option. This feature requires that you specify the files to extract and delete. ARJ will NOT default to "*.*" for this option. This option actually uses more disk space than a simple extraction because of the temporary archive that is created during the extraction process. ARJ e archive -d file1 file2 If ARJ encounters a disk full during extraction, ARJ will abort with an error. You can bypass the abort by using the "-jd" option. Refer to the description of "-jd" for more information. If ARJ encounters a CRC or Bad file data error during extraction, ARJ will delete the corrupted extracted file unless the "-jr" option is used. With the "-ho" and "-ho1" options, you can extract files from an archive based upon the success or failure of a text string search. Refer to the description of the "-ho" and "-ho1"options for details. Examples: ARJ e archive -ho ARJ e archive -ho -jq+3+textstring f: Freshen files in archive Update matching files in the archive that are OLDER than the selected disk files. Example: arj f archive *.c *.h In freshening archives, you should use the same filename specifications that you used to create the archive. Example: arj a archive \temp\ *.* -r arj f archive \temp\ *.* -r If no files or comments have been added to the archive, ARJ will not rewrite the archive at ARJ 2.20 and above. When updating a file in an archive with a file that is NOT newer and if the -jv option is selected, ARJ will display a message that there is "no change". g: Garble files in archive The ARJ "g" command allows a user to garble an already built ARJ archive. Please note that only ungarbled files will be garbled by the ARJ "g" command. Example: ARJ g archive -gdinosaur ARJ also includes a "-hg" option to specify the use of a special powerful encryption routine. i: check Integrity of ARJ.EXE The "i" command allows the user to check the integrity of the ARJ.EXE program. ARJ will report "CRC ERROR!" if the tested ARJ program does not pass its integrity check. This indicates that the program is probably corrupted. Please note that the "i" command should not be used on a compressed ARJ executable (DIETed, LZEXEd, etc.), since the "i" command will then ALWAYS report a CRC error. If the program name is not specified, then ARJ will check the current program being executed. Syntax: ARJ i ARJ.EXE ARJ i at DOS 3.0 and up j: Join archives to archive The "j" command allows the user to merge several ARJ archives. Syntax: ARJ j archive archive1.arj archive2.arj ARJ j archive *.arj -r Some switches NOT supported by the "j" command are: -o, -ob, -f, -u, -c, -v. Note that there is no error message displayed by ARJ when using an unsupported switch with the "j" command. The "-d" option IS supported by the "j" command. Note that switches that do work like "-x" select the archives to be merged and NOT the contents of the archives. This command can be used to convert an SFX module to a regular ARJ archive. Example: ARJ j new_name arjsfx.exe k: purge chapter bacKup files in archive The ARJ k command works similar to the ARJ d command except that the ARJ k command only deletes files that are not in the last chapter. The ARJ k command requires a wildname or filespec as a selection option. This command will ONLY work with chapter archives. Examples: ARJ k archive *.* ARJ k archive *.doc -q l: List contents of archive List contents of archive to standard output. The display can be paused after each screenful with the "-jp" switch. The files are listed in stored order. There are no sort options currently. The last field on the display BTPMGVX stands for: B -> file not contained in the last chapter (obsolete file) T -> text/binary/directory/chapter/label type P -> path information available in "V" listing M -> compression method used G -> file has been garbled (encrypted) V -> archive has been continued to another volume X -> this file is an extended portion of a larger file Example: arj l archive *.c *.h A "+" sign preceding the date-time field indicates that the date is a 21st century date (20nn). The "B" indicator shows files that are not contained in the last chapter backup of a chapter archive. These files are removed when a purge (K command) is executed. For text mode compression, the original file size reported by the "l" and "v" commands is the actual number of bytes input. This is usually the MS-DOS file size minus the number of carriage returns in the file, since C text mode strips a file of carriage returns. You can use the "-n" option with "ARJ l" to list the files that DO NOT EXIST on the disk. Example: ARJ l archive temp\ *.doc -n m: Move files to archive This command is similar to specifying the "a" command with the "-d" switch. The "m" commands adds the selected files to the archive. If the adds are successful, then the added files are deleted. The move command does not ask permission before deleting the files. Use the "ARJ a -d" command for that feature. Example: ARJ m archive soft\*.* The "m" command when used with "-f" and "-u" will delete any successfully added files as well as any files that are already up to date in the archive. It is STRONGLY suggested that you always use the "-jt" option with move commands to set ARJ to verify the archive before deleting the input files. At ARJ 2.30 and above, ARJ will also attempt to delete any directories that are added to the archive. Directories can ONLY be selected by using the "-a1" option. Directories with UNSELECTED files will not be deleted. Example: ARJ m archive -a1 soft\*.* soft deletes soft ARJ m archive -a1 soft\*.* does not delete soft n: reName files in archive This command allows you to change the names of the files stored in an ARJ archive. ARJ will prompt for the new name of each selected file. You can skip changing the name of a particular file by entering a blank line. Example: ARJ n archive *.c In the above example, ARJ prompts for new names for all *.c files. o: Order files in archive This command allows you to re-order the files within the archive. You may specify the order of files on the command line or you can use one or more list files. Any files in the archive that are not specified on the command line or in a list file will be placed at the end of the archive in the same relative order that they were originally. No wildcard names can be used as order specifications. The filenames in the list file must be entered one per line. Example: ARJ o archive file1 file2 file3 In the above example, the files "file1", "file2", and "file3" will be ordered first in the archive. Any remaining files will follow those. Example: ARJ o archive !list In the above example, the archive will be ordered according to the order of the names in the file "list". IMPORTANT: For the "o"rder command, the list file option has one special feature. If the list file is named ARJSORT.$$$, ARJ will expect the file to have been built with the ARJ v -jv1 command. This ARJSORT.$$$ list file may be specified with a pathspec. See the ARJSORT.BAT batch file for an example of this special feature. To facilitate building list files, the "v" command in ARJ will produce special outputs with the "-jv" switch and the "-jv1" switch. The "-jv" switch will display only the pathnames stored within the archive. No other listing data is displayed. This output can be re-directed to a file for manual sorting into a list file. The "-jv1" switch will display the standard verbose display with a few modifications. No sequential number field will be displayed. No comment field will be displayed. The pathname is appended to the archive file description data instead of being on a separate line. Displayed just before the pathname field are the file extension and filename. These fields are available so that the user can sort the text lines by date-time, file extension, CRC value, etc. Text editors like Qedit and SLED allow the user to sort text lines via an embedded text field. At ARJ 2.20 and above, you cannot "o"rder a multiple volume archive and should not. p: Print files to standard output Output files to standard output. This function works such that the output file will contain only the file data extracted. This is important for UNIX-like usage. Example: ARJ p archive manual.doc > output.fil In the above example, output.fil will be an exact copy of manual.doc. There will be no extraneous header information in output.fil. All extraction phase information is written to the STDERR device, which is normally the display screen. Example: ARJ p archive manual.doc > LPT1 In the above example, the standard output is redirected to the printer device. This does not involve any intermediate disk files. However, when redirecting to the printer, ARJ will translate binary files to text, causing possible loss of data. The ARJ command "ARJ e archive manual.doc -jwLPT1" will output a binary file to the printer without loss of data. ARJ sets the file date-time stamp of the output stream. File viewing as in ARJ p archive name | LIST /s will display the correct file date and time. The "-jp" option can be used to pause the screen output as in the "s" command. The "-jv" option will allow the display of IBM graphics characters with the "-jp" option. NOTE: Because of a problem using fwrite() and STDOUT, errors occurring during redirection to serial and printer ports may not be detected. Errors during redirection to disk files will be detected. q: repair a damaged ARJ-PROTECTed archive The "q" command is used to repair a damaged "protected" archive. An archive is protected with the "-hk" option. Both the protected archive and its ARJ-PROTECT data protection file are required to repair any damage. The "q" command will attempt to repair all damages and put the repaired archive in a file named ARJFIXED.ARJ. Example: ARJ q archive When working with a damaged protected archive and the "Abort, Retry, Ignore, Fail" prompt appears, you should select the "Ignore" option. r: Remove paths from filenames This command sets ARJ to remove the path component from the specified filenames stored in the archive. The default is all filenames stored in the archive. This command is useful if you forgot to specify "-e" to exclude paths. s: Sample files to screen with pause This command is similar to the "p" command except that one screenful of data is displayed to the user and a user action is then requested. The action prompt can be suppressed with the "-y" switch. The "s" command filters the text to output by truncating at 79 characters per line and displaying '?' for control characters. The "-jv" option will allow the display of IBM graphics characters. t: Test integrity of archive Test the contents of the selected files for the correct CRC value. ARJ uses a 32 bit CRC to validate the contents of the files. The use of 32 bit CRCs is many times better than the use of 16 bit CRCs for the detection of errors. When used with the "-hk" option, ARJ will test the archive and upon successful completion, will generate the ARJ-PROTECT file. Example: ARJ t archive -hk u: Update files to archive Update older files in the archive and add files that are new to the archive. Example: arj u software When updating a file in an archive with a file that is NOT newer and if the -jv option is selected, ARJ will display a message that there is "no change". v: Verbosely list contents of archive This command lists the full pathname and comments of the archive files as well as the same information as the "l" command. The "v" command now displays a sequence number preceding the pathname. This number can be used with the "-#" option to access specific files within an archive. Example: ARJ v archive ARJ x archive -# 5 10 Use the "-jp" switch to pause the output after each screen. The "-jv" switch will display only the pathnames to the screen. The "-jv1" switch will display the archive data in a manner suitable for sorting on various fields for use with the "o" command. w: Where are text strings in archive This command allows the user to search for text strings within archives. ARJ will prompt the user whether to ignore case when searching. This search option takes MS-DOS code pages into account so that casing of accented/umlauted characters will be done correctly. ARJ will also prompt the user for the number of lines of context of a match to display. If a number greater than zero is chosen, ARJ will display the matched string and the surrounding context with all of the non-printable characters including newlines replaced by question marks. The context lines displayed will be 78 characters in length. When the display context option is chosen, ARJ will inhibit the progress indicator. If the "-jv" is set, IBM graphics characters (128 to 255) will be displayed. Then, this command will prompt the user for up to 20 text strings to search for within the archive. A count of all matches will be displayed after each individual file is scanned. Search strings are limited to 79 characters. Matches that span archive volumes will not be detected by this string search. You can search multiple ARJ archives with a command like: ARJ w \docs\*.arj You may page pause the display with the "-jp" option. The "-jq" option can be used to supply the necessary parameters to the ARJ w command. The option string will be parsed as follows: 1) the first character must be either "+" or "-" representing yes or no, 2) the next character(s) represents the number of lines of context to display, 3) the next character represents a non-digit separator, 4) the next characters represent the search text. Examples: ARJ w archive -jq+3+total caseless search display 3 context lines search for "total" ARJ w archive "-jq-2-to be" case sensitive search display 2 context lines search for "to be" You can use the "-hw" options to change the way ARJ displays the filenames being searched. x: eXtract files with full pathname This command extracts one or more files from the archive to their full paths in the current directory or to the base directory if specified. ARJ normally stores pathnames as if they were children of the target directory. Any drive or root directory specifications are stripped before extracting unless the "-jf" switch is specified with the "x" command. Example: arj x archive *.c If you wish to extract only a portion of an archive and that portion is a directory containing directories, you should use the "-p1" switch. See the "-p" switch for more information. The ARJ e and ARJ x commands now accept the "-d" option to provide an extract and delete option. This feature requires that you specify the files to extract and delete. ARJ will NOT default to "*.*" for this option. Refer to the description of the "e" command for more information about extraction. y: copY archive with new options The ARJ y command provides an easy interface to the -je and -je1 options as well as to the -jb, -jb1, and -jb2 options. Examples: ARJ y archive -je1 convert an archive to an SFX ARJ y archive -jb make an archive a chapter type ARJ y archive -jb0 convert from a chapter type to a standard type When used with the "-g" option and optionally the "-hg" option, ARJ will ungarble a previously garbled archive. Example: ARJ y archive -gpasswrd ARJ SWITCH OPTIONS: ?: Display full help screens The command "ARJ -?" displays several screens of help information with page pauses. The command "ARJ -? -jp" displays the help screens without page pauses. You can also redirect the output to a file as in: ARJ -? > help.txt ARJ may not detect network file redirection and will pause per screenful. -: skip any more switch options The switch option "--" will cause ARJ to stop looking for any more switch options on the command line. This is useful for entering filenames beginning with "-". Example: ARJ a archive -- -file +: inhibit ARJ_SW usage The switch option "-+" will inhibit ARJ from using the value of the ARJ_SW variable in ARJ switch processing. Example: ARJ a archive -+ *.* The "-+" option can now be used to specify an environment variable name to use in place of the default "ARJ_SW". This option can only be used on the command line. Example: ARJ a archive -+ARJ_SW2 @: set 1 token per response file line This switch sets ARJ to enable/disable the interpretation of text lines in an ARJ RESPONSE file as a complete single token. Normally, in an ARJ response file, blanks are interpreted as token separators. (Tokens are commands, filenames, wildcards, and switch options). However, if ARJ scans an "-@" option in a response file, it will process subsequent text lines as single tokens per line. A subsequent "-@" option will revert ARJ to normal multiple tokens per line mode. Example: ARJ @text.rsp TEXT.RSP contains: a c:\dir\archive -r -jt1 -@ -a1 c:\long directory name\*.* c:\other directory name\*.* -@ dir1\*.* dir2\*.* dir3\*.* One common error when using the "-@" option is including extraneous leading and/or trailing blanks. For example, ARJ will abort with an invalid switch option error if the second "-@" above has one or more trailing blanks. &: install critical error handler By default, ARJ sets up a default interactive critical error handler to handle errors like "sector not found" and "drive not ready". The user has the option of retrying the failed operation. The user can press Control BREAK to abort to DOS. The "-&" option sets ARJ to install a non-interactive critical error handler. This is designed for unattended ARJ use. This handler will intercept errors that produce the "Abort, Retry ...." error messages like bad sector errors and file sharing violations. It can be specified on the command line or via the environment variable. Please note that if you specify "-&" on the command line, the handler is installed immediately before any files are processed. If you specify "-&" in the environment, ARJ will not install the handler until all switches are processed. !: set list char This option allows the user to set the character used for list files. The option "-!" with no specified character toggles (turns off) the current list file character (default "!"). Syntax: ARJ a archive -!@ @list.fil ARJ a archive -! !.bat The first example above sets the list file character to the one used by LHA and PKZIP. $: add/extract volume label This option allows the user to store or extract DOS volume labels in ARJ archives. It is possible to have multiple labels in one archive. At ARJ 2.10 and above, you can only add or extract volumes labels at DOS 2.0 and above. The "-$" option may be specified with or without a drive specification. The drive can be specified by appending the letter and optionally the ":" to "-$". If none is specified, ARJ assumes the current drive unless a specified target base directory has a drive specification. WARNING: Currently, ARJ allows more than one volume label and duplicate volume labels in the same archive. You can delete one or more duplicate labels with the "ARJ d -q archive label" command. ARJ will query you on each occurrence of "label". This "faulty" mechanism allows a file and label of the same name to be added to an archive. The capability of having duplicate labels in the same archive MAY NOT be present in future versions of ARJ. The SFX and SFXJR modules DO NOT support volume label extraction! The SFXV modules DOES. On the list screen, volume labels will be indicated by the "V" under the "T" column. Syntax: ARJ a archive -$ add all files and the label of the current drive. ARJ a archive ... -$B add only the label of drive B ARJ a archive ... -$B: add only the label of drive B ARJ u archive ... -$B: add only the label of drive B To extract volume labels, you must select the label by setting "-$" and specifying a matching wildname/filename. Syntax: ARJ e archive doslabel -$ extract the label named doslabel to the current drive. ARJ e archive -$D: extract all files to the current drive and extract the label to drive D:. ARJ e archive label B:\ -$ extract all files to B:\ and the label to drive B. ARJ will display all labels over 8 characters with a "." in it like a normal DOS filename. However, ARJ will not restore this extra "." when extracting. ARJ will only create standard uppercase DOS volume labels. Volume labels created by utilities other than standard DOS commands like LABEL and FORMAT may cause label access problems for ARJ. For example, Norton's VL.EXE can create labels with lowercase letters. You will need to use LABEL.COM to delete these labels in order to let ARJ set a new label. Programs that delete unusual labels must do absolute writes to disk or use a wildcard ("*.*") delete of files with the label attribute in the root directory. A single bit corruption in the program can result in the deletion of ALL files in the root. ARJ currently chooses not to take that risk. #: select files by order number The "-#" option allows the user to select files from an archive by their order number in the archive. For example, the number 1 selects the first file in the archive. This option is useful in selecting files where there are duplicates in the archive. It is also useful for batch type utilities that need to extract files sequentially from an archive for processing. Archive menu programs should find this option very useful in processing archives with duplicate filenames. You can specify a series of files with the n1-n8 type syntax. No embedded spaces are allowed. ARJ e archive -# 1 4 12-25 40-100 NOTE that the order number starts from 1 for each individual archive including multiple volume archives. In other words, the first file in archive.a04 is number 1. Do NOT mix filenames with the numbers other than the base directory. Example: ARJ e -# archive basedir\ 1 3 5 20 21 a: allow any file Attribute By default ARJ will not select system or hidden files via wildcarding unless the "-a" option is specified. The "-a1" switch sets ARJ to add any directories in the selected set of matching filespecs to the archive being built. This switch also selects hidden and system files as in the "-a" switch. Even empty directories will be added. The "l" command will display such directories with a "D" under the "T" (file type) header. Older releases of ARJ will skip over empty directory entries. The ARJSFX and ARJSFXJR modules CAN process empty directory entries. This option is useful for saving software directories with needed empty directories. See the "-hb" option for a newer way of selecting files. b: Backup changed files The "-b" switch will select only files that have the archive bit set. It will NOT reset archive bits. Example: arj a a:backup c:\*.* -b -r -va simulates FULL BACKUP See "-hb" option for other options. b1: Backup changed files and reset archive bits If you specify the "-b1" option, files with the archive bit set will be selected AND the archive bits of all archived files will be reset after a successful archive has been built. Example: arj a a:backup c:\*.* -b1 -r -va simulates BACKUP Under Windows 95, the use of the "-b" type switch options to reset the archive bit may result in a sharing violation error. ARJ will display the error and then proceed ignoring the error. b2: Only reset archive bits The "-b2" switch does NOT affect file selection. It does cause ARJ to reset the archive bits of added files. If the "-f" or "-u" option has been selected, ARJ will also reset the archive bits of files that are already duplicated in the archive. Example: arj a e:archive c:\*.* -b2 -r archives all files on the C drive and resets all archive bits. b3: reset archive bit during restore The "-b3" switch is used to reset the archive bits of files being extracted. It is useful for setting the archive state so that a subsequent incremental backup will not backup these extracted files. b4: do not restore file attributes and reset archive bit The "-b4" switch is used to set ARJ to NOT restore any file attribute bits and to reset the archive bit of files being extracted. It is useful for easing the cleanup/deletion of temporarily extracted archive files as in a virus scanning process. Files will NOT be restored as system, hidden, or readonly. b5: do not restore any file attributes The "-b5" switch is used to set ARJ to NOT restore any file attribute bits and to allow the archive bit to stay set of files being extracted. c: skip time-stamp Check Normally with the "u" and "f" commands, ARJ will only update newer files to an archiver. The "-c" switch will set ARJ to update the archive regardless of the date-time modified time stamps. When extracting files from an archive with the "-y" and "-f" switches set, ARJ would normally skip extracting older files. The "-c" switch will set ARJ to extract these older files. d: with Delete (move) This switch provides the standard MOVE command. Successfully added files will be deleted. When used with the "-f" or "-u" option, ARJ will also delete files that are already duplicated in the archive. ARJ will prompt the user before deleting the files unless the "-y" switch is specified. Also, you can use the "m" command which does not prompt before deleting the files. At ARJ 2.30 and above, when using the "-a1" to specify the selection of directories, ARJ will also delete the selected directories. ARJ a archive filename -d -y is equivalent to ARJ m archive filename and ARJ a archive filename delete filename The ARJ e and ARJ x commands now accept the "-d" option to provide an extract and delete option. This feature requires that you specify the files to extract and delete. ARJ e archive -d file1 file2 Chapter archives do NOT support extraction with deletion. e: Exclude paths from filenames By default ARJ always stores the pathname of the archived file. This switch will set ARJ to store only the filename component. The "-e1" switch option sets ARJ to NOT store the base directory name with the filenames in the archive. Example: ARJ a archive C:\SOFTWARE\ARJ\ *.* -r -e1 In the above example, ARJ will NOT store the C:\SOFTWARE\ARJ\ as part of the filenames. When updating files within an archive, ARJ uses the full pathname to match against the full name of the selected files. The "-e" and "-e1" option affect this exact matching. If "-e" is specified, only the filespecs of the selected files will be matched against the full pathname of the files in the archive. If "-e1" is specified, the full pathname minus the base directory of the selected files is used to match against the full pathname of the files in the archive. In other words, ARJ will only update a file within an archive if the name of the new file as stored in the archive would be identical to the name of the original file stored in the archive. This switch used during extraction will exclude the beginning characters of the filename. This can be useful for shortening a long output pathname. Examples: ARJ x archive -e10 will exclude the first 10 characters of the output name. ARJ x archive -e4 will exclude the first 4 characters. f: Freshen existing files This switch used with the "e" or "x" commands sets ARJ to only extract newer files from the archive. This switch used with the "m" command sets ARJ to update only input files with newer dates than the ones in the archive. After the archive has been updated, all updated selected files and all up to date selected files will be deleted. The ARJ m -f command is very similar to the LHARC m command. f1: Freshen existing files (OLDER) This switch used with the "e" or "x" commands sets ARJ to only extract OLDER files from the archive or to add OLDER files to the archive. f2: Freshen different files This switch used with the "e" and "x" commands causes ARJ to add/extract CHANGED (different date-time or different size). There is a slight limitation to this switch. When processing files that are split across volumes, the size test is skipped. f3: Freshen files that are CRC mismatches This switch is used to select files that are CRC mismatches for extracting or adding. The 32 bit CRC (checksum) of the file is matched against the CRC of the file in the archive. There is a slight limitation to this switch. When processing files that are split across volumes, the CRC test is skipped. g: Garble with password This switch followed by a password "-gpassword" will encrypt or decrypt an archived file. During a "l" or "v" command, a garbled file will display a "G" after the method number. Example: ARJ e archive -gpassword If the "-g" option is followed by a question mark "?", ARJ will prompt the user for the password without displaying the password input. The backspace key can be used to erase characters. Example: ARJ a archive -g? Using the wrong password during extraction will result in a "Bad file data" or "CRC error" error message. Use the "g" command to garble an already existing ARJ archive. Please save your password in a safe place. It may be nearly impossible to retrieve your garbled files if you forget your password. There is NO TRICK to recovering a lost password. The garble option in this version of ARJ has two versions. One is the original version found in earlier ARJ releases. It is compatible with older versions and works like those versions. The other garble version uses a separate encryption module. This separate module provides a new encryption scheme based upon the Russian encryption algorithm (GOST 28147-89 cipher). This algorithm is similar in design to DES; however, GOST is designed for software implementation. This implementation uses the 64 bit cipher feedback mode. This new option is accessed by using the new "-hg" option. This option sets ARJ to use the separate encryption module to encrypt the data. By default, ARJ will look for the file "ARJCRYPT.COM" in the same directory where the ARJ.EXE being executed is found. The user may specify the pathname of the module to use. Examples: ARJ a archive *.doc -gThis_is_a_password -hg ARJ a archive *.doc -gpassword -hgc:\dir\enc.com This separate module feature has the advantage of saving space with the ARJSFXV module and the DEARJ.EXE module when encryption is not needed. You simply do not include the encryption module in the archive when not using encryption. For non-USA users, the encryption overlay module is not included with this version of ARJ. Because of USA export regulations, ARJ Software may not export the encryption overlay module from the USA. The new garble option accepts a password key up to 32 characters long. Excess characters are ignored. Garble passwords ARE CASE SENSITIVE! DO NOT LOSE your password! There is no known method to recover the password other than by brute force, which could take a very long time. The longer the password, the longer it would take to "guess" it. This new encryption scheme is not compatible with the "-g" option of pre-2.55 versions of ARJ. If you want to maintain compatibility with pre-2.55 versions of ARJ, you should NOT use the "-hg" option. Only the multiple volume self-extractor supports the new encryption module. When garbling or ungarbling an existing archive, ARJ will detect the method of encryption previously used and select that same method even if the "-hg" option was not specified. i: with no progress Indicator Do not display the percentage progress indicator. The progress indicator appears during the add, extract, search, and test operations. The "-i1" option provides a bar type graphical progress indicator for the compression, extraction, and testing type commands of ARJ. This provides an alternative to the simple numeric increasing percentage progress indicator. The "-i2" option provides a combined percentage and bar progress display. The "-i3" switch shows the percentage progress of the WHOLE archive build. This switch is only effective during adds. The "-i4" switch shows the percentage progress as a bar graph of the WHOLE archive build. This switch is only effective during adds. The "-i5" switch shows the percentage progress including a bar graph of the WHOLE archive build. This switch is only effective during adds. The "-i6" switch shows the percentage progress of the WHOLE archive build along with a progress bar graph for the current file. This switch is only effective during adds. j: selects alternate set of switch characters. This switch toggles the set of switch characters. The toggle is reset at end at of each separate switch sequence back to the main set of switch characters. For example, "-ja" is not the same function as "-a". However, "-jja" is the same as "-a" because of the double toggle. Also, "-jaje" is NOT the same as "-ja -je". The switch sequence "-jae" is the same as "-ja -je". k: Keep a .BAK of ARJ archive Create a ".BAK" of the original archive file during an update. The original archive will be suffixed with ".BAK". Any existing ".BAK" file will be overwritten. This has no relation to "backup type" ARJ archives. l: create List_name file This switch will set ARJ to dump to the filename specified after the "-l" switch all of the filenames to be processed by this ARJ command. For add type commands, this list contains all files that matched the file wildnames given on the command line. For other commands, the file will contain only the original filenames and/or wildcard names. Other options do NOT affect the output of filenames to this list file. To get an index file for backup purposes, use the "-ji" option. This list file can be used as a listfile on the command line. Example: ARJ a -lname.lst archive *.exe This example will create a file named "name.lst" with all *.exe files. m: with Method 0, 1, 2, 3, 4 Method 0 = storing (no compression) Method 1 = best compression for general use (default compression method) (requires 300,000 plus bytes memory) Method 2 = slightly less compression and faster (requires 282,000 plus bytes memory) Method 3 = less compression and less memory and faster (requires 250,000 plus bytes memory) Method 4 = fastest compression (requires 235,000 plus bytes memory) Example: ARJ a archive *.exe -m2 The "-jm" option will usually improve the size reduction of method 1 at the cost of speed and memory. The behavior of "-jm" with -m2, -m3 and -m4 is UNDEFINED. Method 4 uses a different decoder than 1 to 3. Method 4 is almost twice as fast as method 1. During extraction, ARJ uses less memory than during compression. See the section on ARJ LIMITATIONS for more memory usage information. n: only New files (not exist) With the "e" or "x" commands, extract files that do not exist in the target directory. With the "a" or "m" commands, archive files that do not exist in the target archive. With the "d" or "l" commands, specify files that do not exist in the target directory. o: On or after date YYMMDDHHMMSS The switch "-o" by itself means select files modified today. If "-o" is followed by a date and optionally a time, ARJ will only select files modified on or after that date-time. Example: ARJ a test -o9001021700 means select files modified on or after Jan 2, 1990, 5:00 PM. Years less than "80" will be considered as 21st century years. There is no option for using other date-time formats. The switch "-ob" selects files modified before today. If "-ob" is followed by a date and optionally a time, ARJ will only select files modified before that date-time. ARJ now accepts the use of "-o" and "-ob" options simultaneously to specify a range of selected dates. This is useful for selecting files on a specific date. Example: ARJ a archive *.* -o910101 -ob910102 The "-o" option and/or the "-ob" option will default to today's date at midnight (0000 hrs) when specified without dates. The "-od" switch sets ARJ to select files no older than the specified number of days. The days are calculated from midnight. Examples: ARJ a archive -od0 select files modified today ARJ a archive -od1 select files modified yesterday and today p: match using full Pathnames When "-p" is specified, ARJ looks for an exact pathname match. This can be modified by the "-e" option. For non-update commands and specified filenames with paths, ARJ will match the full path with or without the "-p" switch. To match directory paths that contain subdirectories, you should use the "-p1" switch. This switch sets ARJ to match only the initial portion of the pathnames against the wildnames specified. For example, if your archive contains the TURBOC++ directory named TC and you wish to extract the INCLUDE subdirectory along with the subdirectory INCLUDE\SYS, you can use the following command: ARJ e archive TC\INCLUDE\*.* -p1 If you wanted to extract all of the INCLUDE\S*.* files including the contents of the SYS subdirectory, you can use the following command: ARJ e archive TC\INCLUDE\S*.* -p1 q: Query on each file This switch causes ARJ to prompt the user prior to acting upon each archived file for all but the "j", "l", "t", "v", and "w" commands. This allows you selectively to delete, add, etc. r: Recurse subdirectories This switch will set ARJ to recurse any wildcards specified on the command line including ARJ archive filenames by traversing all subdirectories scanning for matches. ARJ will also recurse non-wildcard filenames as in: ARJ a archive FILE.BBS -r s: set archive time-Stamp This switch causes ARJ to set the date-time stamp of the archive to that of the newest file in the archive. This option will also work with non-update commands as in: ARJ l archive -s .... The "-s1" switch is used to keep the old archive date-time stamp. The new archive will have the same timestamp as the original archive. The "-s2" switch is like the "-s" switch except that it only works for archive modification commands. This makes it more suitable for use in the ARJ_SW environment variable. The "-s3" switch sets ARJ to keep both the original archive file time-stamp as well as the original internal archive modified time-stamp when modifying the archive. This "-s3" feature is helpful when adding a copy of the data damage protection file to the "protected" archive. Using this switch, you can add a file to an archive and then remove that file and end up with the original archive. This is necessary because any change in archive contents would be perceived as damage by the ARJ "q" (repair archive) command. Example: ARJ a archive *.doc -hk ARJ a archive archive.xrj -s3 ARJ e archive archive.xrj -d -s3 ARJ q archive The above sequence of commands replicates a situation where the user embeds a copy of the data damage protection file into the "protected" archive. In the case of slight archive damage, the protection file can be extracted and used to recover damaged data. t: set file Type This switch causes ARJ to open and read the file to be archived in binary or text mode. The default is binary mode (-t0). To archive in text mode, use the -t1 switch. The "-t" switch is equivalent to "-t0". If you specify the switch "-t0", ARJ will always use the binary mode even for freshening text mode files already in the archive. The file type "text" is only needed for future cross platform transfers of ARJ archives. It enables ARJ to extract text files to the host file system with the text newline sequence that is correct for that operating system. However, this mode may produce slightly better size reduction. The "-t1" option combined with "-jh65000" can produce some of the best size reduction numbers. Extraction of files compressed in text mode is slower than the extraction of binary files. You should NOT use the "-t1" switch while archiving in multiple volume mode. **************************************************************** DO NOT USE THE TEXT MODE ON NON-TEXT FILES!!! Word processor format files are NOT TEXT FILES! Text files are files like those created by EDLIN, EDIT, QEDIT, NOTEPAD, and BRIEF. On non-text files ARJ will prematurely stop input if it finds an embedded EOF character (CTL Z). This will produce a LOSS of data on binary files. As of ARJ 2.30 and UNARJ 2.30, ARJ will extract text mode data in 8-bit format when extracted to the original type of platform. Only when the text file is extracted to a different type of platform will the 8-bit text be stripped to 7-bit text. **************************************************************** In "-t1" text mode, ARJ will look at the first 4096 bytes of the input file looking for non-text characters. In "-t1g" text with graphics mode, ARJ will look at the first 4096 bytes of the input file looking for too many byte values over hex 7F. If ARJ finds either condition it will automatically backtrack and switch to "-t0" (default) binary mode for that particular file. In addition at the end of compressing the input file, if ARJ finds that the input file size is not greater than 80 percent of the binary file size (size on disk), ARJ will backtrack and re-archive that file in binary mode. This should help to avoid the problem of accidentally compressing executable files with the "-t1" option which results in lost data. These tests are not foolproof. The original file size reported by the "l" and "v" commands is the actual number of bytes input during text mode compression. This is usually the MS-DOS file size minus the number of carriage returns in the file, since C text mode strips a file of carriage returns. There can be problems with the file size because compressing in TEXT mode can be LOSSY (unnecessary characters may be lost). This can cause problems for some archive conversion programs that check file sizes. The "-t" option has been modified to allow setting file type by suffix similar to "-js" option. If you want to set the file type to text mode for .ASM and .C files, you would specify the option "-t1.asm.c". ARJ a archive *.* -t1.asm.c.h.doc ARJ a archive *.* -t1g.txt.doc Note that in the switch sequence "-t1f -t1f.doc.asm", the second switch does not override the first switch which specifies that all files are to archived in text mode. If you want to specify the binary file type by suffix, you must specify the default file type to text and then specify the type by suffix, because the default file type is normally binary. ARJ a archive *.* -t1 -t0.com.exe.obj Because of the way ARJ checks all files to be archived in text mode, some true text files will not pass the test. In this case, you can specify the "f" modifier to force text mode. This modifier can be combined with the "-t1." suffix option. The "f" modifier must follow the "g" modifier if any. ARJ a archive *.bat -t1f ARJ a archive *.txt -t1gf ARJ a archive *.* -t1f.bat.asm.doc One trick that you can do with the -t1 option is to convert UNIX text files to MS-DOS text files. If you have extracted the files out of the ZOO 2.10 archive and need to convert the linefeeds to carriage return/linefeed, you can use the following commands: ARJ a archive *.* -m0 -t1 ARJ e archive *.* -y u: Update files (new and newer) This switch used with the "e" and "x" commands causes ARJ to extract newer and non-existing files. This switch used with the "m" command causes ARJ to update only input files with newer dates than the ones in the archive and add new files to the archive. After the archive has been updated, all added files and updated selected files and all up to date selected files will be deleted. u1: Update files (non-existing and OLDER) This switch used with the "e" and "x" commands causes ARJ to extract OLDER and non-existing files from an archive or to add OLDER and non-existing files to an archive. u2: Update different files This switch used with the "e" and "x" commands causes ARJ to add/extract CHANGED (different date-time or different size) and non-existing files. There is a slight limitation to this switch. When processing files that are split across volumes, the size test is skipped. u3: Update CRC mismatched files This switch is used to select files that are CRC mismatches or NEW for extracting or adding. The 32 bit CRC (checksum) of the file is matched against the CRC of the file in the archive. There is a slight limitation to this switch. When processing files that are split across volumes, the CRC test is skipped. v: enable multiple Volumes This switch is required to put ARJ into multiple volume mode. This switch allows the creation of multiple volumes in the ADD mode. The command "arj a a:arjvol \*.* -b -r -v360000" allows a user to backup up all files changed since the last backup to multiple floppy disks. ARJ will pause between volumes to allow changing disks. Subsequent volumes will be suffixed .A01, .A02, .A03, .... , .A99, .A00, .A01, etc. You can start the volume series at .A01 by specifying the full name of the starting archive as "name.A01". After the pause to change diskettes, ARJ will check to make sure that the diskette has been changed. However, this check is limited to 3 retries for the same volume. This test can be inhibited with the "i" modifier. Example: ARJ x a:archive -vi ARJ normally only creates volumes numbered up to .A99 for one hundred uniquely named volumes. Then the numbers roll over to .A00. When the archive name ends in .000, ARJ will create volumes numbered up to .999 for one thousand uniquely named volumes. You can also start the series at .001. Example: ARJ a -v720 -y -r archive.000 d:\ Archived files can be split across volumes. ARJ will try to fill each volume to within 200 to 1000 bytes of the specified maximum size. The modifier "w" specifies to ARJ that files are NOT to be split across volumes except for one case. That case is where the archived file would not fit in ONE whole volume. This feature does not optimize the use of space in these type of volumes. With this feature, it is possible to have a volume of only 100 or less bytes. An advantage to "w" type volumes is that updating of these volumes is supported for the "f"reshen command and other commands that do not add new files to the archive. You can add files to these volumes only if you do NOT limit the volume size. The command "arj x a:arjvol -v" would restore files starting from arjvol.arj. You must specify the entire ARJ volume name including the .Ann suffix when starting from the middle of a series of volumes or when the series starts with ".A01" or ".000", etc. The global "-y" option will disable the next volume prompt for multiple volume archives EXCEPT when the archives are located on removable media. The "-jyv" option will disable the next volume prompt even when using removable media. At DOS versions before 3.0, only drives A and B are considered removable. ARJ x a:arjvol -v -jyco The above example extracts in multiple volume mode and suppresses prompting for permission to create directories and to overwrite existing files. ARJ will assume yes in these cases. Because of the splitting process, archived split files with a size of zero bytes are possible. This is not an error. If you comment your archives with long comments, you should take that into account when specifying volume size. You should specify a smaller volume size during the "a" command before adding the comments. The "-v" switch will accept the abbreviations 360, 720, 1200, and 1440. These will be translated to 362,000, 730,000, 1,213,000, and 1,457,000 bytes, respectively. Please note that if the available disk space is less than the requested amount, ARJ will prompt the user for permission to continue. You can use the "K" modifier as a shortcut for "000". For example, 100K means 100000. "K" does NOT mean 1024. ARJ will accept the "M" modifier to multiply by 1,000,000 (one million). The "-vv" switch turns on the next volume beep option. When you select this option, ARJ will sound a beep prior to the next volume. The "-va" switch sets the disk space auto-detect option. ARJ will check for the disk space available on the target directory and try to use all or most of it. This option is aimed at diskette usage. Please note that this switch option detects free disk space. It does not detect formatted disk space. If the space available is less than 10,000 bytes, ARJ will prompt the user for permission to continue. Please note that ARJ can support the use of diskettes formatted at higher than normal capacities such as 3.5 inch HD diskettes formatted at 1.6 MB. Examples: ARJ a A:backup -b -va ARJ a backup -v360 The "r" modifier allows the reservation of disk space on the first volume. The number after the "r" specifies the space to reserve. This is useful for software installation volumes. Example: ARJ a install -v360r50K make first volume 50000 bytes smaller than 360K. The switch modifier "s" can be used to make ARJ execute one specified system command prior to each volume or make ARJ pause for manual execution of system commands. This is useful for purging target diskettes before ARJ writes to them. Please note that when processing a large number of files, ARJ may not have enough free memory left to properly execute the system commands. The switch modifier "z" is identical to the "s" modifier except that the system command is NOT echoed to the screen. Optionally, after the "s" modifier, you can specify a system command or batch filename. ARJ will automatically execute the command or batch file before each volume. If the command has embedded blanks, then the entire switch option must be surrounded by double quotes. The system command is executed before ARJ executes the auto-detect space option. Examples: ARJ a A:backup -vas ARJ a A:backup -vvas ARJ a A:backup -v360s ARJ a A:backup -vvw360s ARJ a A:backup -vaspurge.bat ARJ a A:backup -v360sdelete.bat ARJ a A:backup "-vasFORMAT A:" ARJ a A:backup "-vasDIR C:\ " Note that the last example has a space before the last double quote mark. If the last space is missing, the internal command line parser will make the double quote mark part of the DIR command. The "-v" switch now accepts its modifiers in any order. The "s" and "z" modifiers must be last because any succeeding text is considered the system command to execute. Examples: ARJ a volume -vavw beep, autosize, whole files ARJ a volume -vavsDIR beep, autosize, execute DIR Volume archives can be used as stand-alone archives for non-update commands except for the files that are split across volumes. It is recommended that the "-jt" (test archive) option be used with the "-v" switch to ensure perfectly built volumes as it is tedious to retest volumes after they are built. During ARJ operation in non-update commands, ARJ will not abort when it cannot open the correct sequential ARJ volume archive. It will report the open error and proceed to the "Ok to process the next volume?" prompt. At this point it is possible to swap diskettes to put the correct volume in place. This feature is disabled if the "next volume" prompt has been disabled. For those who have enough free hard disk space, the -v option can be used to make backing up the hard disk fairly easy. ARJ can be set to create multiple floppy sized volumes on the hard disk for later copy to diskettes. So even if ARJ is slow, you can fire up an ARJ backup and some time later, you can quickly copy the volumes to floppies. Below are sample backup commands: arj a backup *.* -b2 -r -v360 -y -jt -js full backup arj a backup *.* -b1 -r -v360 -y -jt -js incremental backup ***************************************************************** See the "-jn" and "-jx" options to see how to recover from an abort in the middle of a backup type operation. ARJ will allow a restart in the middle of an aborted backup at the disk where the failure occurred. ***************************************************************** WARNING: Updating multiple volume archives with the "-v" switch set is NOT supported or recommended. We cannot provide any technical support for this type of update. By default, ARJ will not allow the updating of multiple volume archives. You can specify the "-hu" option to bypass this protection. Example: ARJ c archive -hu -zcomment.txt ***************************************************************** TIP: To pre-determine the number of diskettes required to archive a set of data, you can take advantage of the "s" option of the "-v" switch. The "s" option lets you execute a DOS command prior to each volume. You can specify a command that deletes the previously created archive volume. This lets you use the same floppy diskette/hard disk space to build the multiple volumes. Example: ARJ a -r "-vasdel a:volume.a??" -y a:volume c:\*.* w: assign Work directory This switch option is HIGHLY recommended if you are archiving directly to diskettes or if you have a sufficient RAMDISK space. By default, ARJ builds a new ARJ archive file in the same directory as the old archive file. By specifying the "-w" switch, you can specify the working directory where the temporary archive file will be built. After the temporary archive file is built, it is copied over the original one and deleted. Normally ARJ requires enough disk space for the original archive and the new temporary archive. Specifying the "-w" switch allows you to move some of that disk space requirement to another directory. When using the "-w" switch while archiving to multiple volumes, ARJ will check the available disk space in the work directory. If there is not enough space, ARJ will prompt for permission to continue. This prompt can be suppressed with the "-y" and "-jyk" switches. If the copy of the temporary archive on top of the original archive aborts, you will have to do the copy manually. ARJ will not delete the temporary archive in this error situation. If you press CTL BREAK during the copy process, ARJ will delete both the temporary archive and the target archive unless this was a modification of an existing archive. Example: ARJ a -we:\temp\ archive *.c For speed reasons, you should always use the "-w" option when creating or modifying archives on diskettes. You should specify a work directory on your hard disk or ramdrive. Example: ARJ a -we:\ b:archive *.c x: Exclude filenames This switch is used to exclude filenames or wildnames from the list of filenames to be processed. Example: ARJ a archive soft\*.* -r -x*.exe -x*.obj -xtest This example will archive all files in the soft directory and subdirectories with the exception of any files named "test" or ending in ".exe" and ".obj". You can also specify an exclude file list by preceding the filename with the list character "!". The exclude file list must contain a list of filenames/wildnames one per line with no leading or trailing blanks. Example: ARJ a archive soft\*.* -r -x!exclude.lst You can specify a pathname to exclude as in: ARJ a archive \dir\*.* -r -x\dir\*.* In the above example, ARJ will exclude all files in \dir but not the subdirectories in \dir. The "-x" option also allows you to exclude an entire path including subdirectories from being selected for processing. Syntax: ARJ a archive C:\*.* -xC:\TEMP\ The "\" after C:\TEMP indicates to ARJ that everything below C:\TEMP\ is to be excluded. Note that the exclude directory option requires that the directory be specified in the same relative path that the selected files use. Example: arj a archive \temp\*.* -x\temp\firstdir is correct usage arj a archive \temp\*.* -xC:\temp\firstdir is NOT correct because of the C: The "-x" switch also works for non-update commands like "e"xtract and "l"ist. Examples: arj e archive -x*.exe extract all files except *.exe files arj l archive -x*.exe -x*.obj list all files except *.exe and *.obj A maximum of 8000 filenames or wildnames can be excluded. Note that the "-x" option is unaffected by the "-p" option. y: assume Yes on all queries Use this switch for batch type uses of ARJ. This switch disables most of the normal user queries during ARJ execution. Use this switch to suppress overwrite queries in the "e" and "x" commands, to suppress the make new directory query in the "e" and "x" commands, to suppress the new filename prompt when an open file operation fails in the "e" and "x" commands, to suppress the pause during the "s" command and to suppress the next volume pause using the "-v" option to create volumes on the hard disk. The "-y" switch will NOT suppress the "-v" next volume prompt when the archive is located on a drive with removable media such as a diskette drive. Use this option with due caution, especially during extraction as this sets ARJ to overwrite files. However, the "-n" option can be used to avoid any overwriting. As an alternative, you can use the "-jy" option which lets you suppress individual types of user queries. z: supply file for archive comment The "-z" switch has been provided to facilitate batch commenting of ARJ archives with the "c" command. When the "-z" option has been specified with or without a comment file, ARJ will only process the archive header comment and will skip any file commenting unless the "-jz" switch has been specified. A comment file containing only a single blank can be used to erase comments from ARJ archives. Syntax: arj c archive -z arj c archive -zcomment.txt arj a archive -zcomment.txt The "-z" option also allows one to dump the ARJ archive header comment to a file. This will only extract the main archive comment and not the individual file comments. Syntax: arj e archive ... -zcomment.txt dumps only the comment arj x archive -zcomment.txt dumps comment and files j#: store only the file CRC and not the file contents This switch allows the building and testing of a special ARJ "HOLLOW" archive that is missing the actual compressed file contents. This allows the creation of small archives for CRC testing against the CRCs of actual files. This is suited for special applications. Please take note that NO actual file data can be extracted from these "HOLLOW" archives. For example, a user has transported a directory of files from one PC to another PC. At a later time, that user would like to determine which files have actually changed their contents regardless of the date-time stamps. That user could archive the original directory using the -j# switch which builds the ARJ "hollow" archive with the sole exception that no compressed data is stored with the archive. This allows the rapid building of a much smaller archive. The file CRC is computed and stored in the archive. This new "hollow" archive is transported to the other PC. A simple ARJ test command with the "-jt1" option on the other PC would point out files whose content's CRC do not match. Another use of this "hollow" archive is for FILE INTEGRITY checking. You can create this "hollow" CRC archive and use it at a later time to determine if any files have been corrupted or damaged by VIRUS or system problems. Please note that there is a VERY SMALL possibility that a file has been changed and its new 32 bit CRC still matches. That possibility is approximately one in four billion. The -j# option during an ARJ archive build will set the compression method to 9. The only change is that the file header will indicate that the compressed file size is ZERO. Otherwise, the file header is the same as in an archive where the file was actually compressed and stored. To use this "hollow" archive to test CRCs against actual file CRCs, use the following syntax: Syntax: ARJ t archive_name -jt1 ARJ t archive_name target_dir\ -jt1 The second command above is used where the relative pathnames stored in the archive do not match up with the current directory. See the discussion in ARJ.DOC for more information on the option "-jt". When ARJ displays "NOT matched" for a "hollow" archive, it means the file size in the archive and the size of the actual file do NOT match. j#1: do not store file data or file CRC This option differs from the "-j#" option in that the 32 bit CRC is NOT stored. The compression method is set to 8. ja: show ANSI comments This switch has acquired NEW functionality. Its OLD function was to set ARJ to fully display ANSI escape sequences. It now is used with the "ARJ p" command to display files using ARJ's own ANSI display handler. ANSI.SYS is no longer needed. Example: ARJ p ansifile -ja -q ja1: inhibit the display of the archive comment The "-ja1" switch will suppress the display of the archive comment. jb: set archive Backup type This switch sets ARJ to build a chapter archive. Once an archive is set to a chapter archive, all subsequent processing will continue to treat it as a chapter archive. The advantage of a chapter archive over a series of separate archives of the same set of files is that space can be saved when archived files do not change. A single chapter archive can produce the same results as one hundred standard archive backups. In other words, one can update a chapter archive one hundred times and fully recover any one of those updates. Technically speaking, each file in a chapter archive has a chapter lifespan range. When a file is backed up and has not changed since the last backup, only the lifespan range is changed. A copy of the file is NOT added to the archive since a copy already exists in the archive. If the backed up file is different from the previous version, then that file is added to the archive with an appropriate chapter range. The previous version of the file is still kept in the chapter archive. When a particular chapter is restored, ARJ selects only the files whose lifespan includes the chapter number requested. As an example, suppose one made a series of daily chapter backups of a document directory where only one document out of the one hundred documents changes on a daily basis. The chapter archive would contain the original one hundred documents plus a copy of each day's changed document. When processing chapter archives, all ARJ add type commands (A,M,F,U) will create a new chapter in the chapter archive. Up to a maximum of 250 chapters can be stored in a single archive. The proper way to build and update a chapter archive is with the "ac" command. You should use the same command line arguments for each chapter update. If you fail to select the same files as before, the chapter archive will not update the lifespan ranges properly and those unselected files will "appear" to have been deleted for the current chapter. By default, the "ac" command will update a chapter archive with files that are DIFFERENT from the previous chapter (different size or date-time stamp). The "ac" command is actually an abbreviation for the following command and options: "u -u2 -jb", so you CANNOT use the "-u" or "-jb" options with the "ac" command. ARJ ac archive dir\ *.txt *.doc *.wri initial build ARJ ac archive dir\ *.txt *.doc *.wri second chapter ARJ ac archive dir\ *.txt *.doc *.wri third chapter ARJ ac archive dir\ *.txt *.doc *.wri fourth chapter ARJ ac archive dir\ *.txt *.doc fifth chapter will be missing all *.wri files An expert with ARJ may want to use the actual commands and switches instead of the "ac" command. ARJ u -u2 -jb archive dir\ *.txt The "-jb$" option will allow ARJ add type commands to update/replace files in the most recent chapter in the archive. This option can be used to "fix" a chapter where files are missing. Be careful doing this. It is much simpler and safer to add a new chapter to the archive. ARJ a archive -jb$ dir\ *.wri It is possible to change a standard ARJ archive to a chapter archive with the "y" command and the "-jb" option. The opposite is possible with the "-jb0" option. ARJ y archive -jb converts archive to chapter archive ARJ y archive -jb0 converts chapter archive to standard archive You can restore a specific chapter as in: ARJ x archive -jb10 restores chapter 10 ARJ x archive -jb20 restores chapter 20 You can restore a range of chapters as in: ARJ x archive -jb2-5 extracts chapters 2 to 5 ARJ x archive -jb2- extracts chapters 2 to the last chapter Please note that when restoring a range of chapters, ARJ will segregate each chapter's set of files in a numbered directory based upon the chapter number. Files whose lifespans range over a series of chapters will be located in the first of that series. This feature is useful for looking over the changes that have occurred over a series of chapters. You can list a specific chapter or chapter range as in: ARJ l archive -jb10 lists chapter 10 ARJ l archive -jb2-5 lists chapters 2 to 5 ARJ l archive -jb2- lists chapters 2 to the last chapter ARJ l archive lists the most recent chapter You can see the chapter ranges for each file in the archive with the following command: ARJ l archive -jb* -jv To start all over again with a chapter archive, you should purge all of the previous chapters, convert the archive to a standard archive, and then back to an archive chapter. Example: ARJ k archive *.* ARJ y archive -jb0 ARJ d archive *.* -hbc remove chapter labels ARJ y archive -jb You cannot modify specific chapters other than the most recent chapter in terms of adding, deleting, or changing files. You can remove the most recent chapter with the following command: ARJ d archive *.* -jb ARJ dc archive *.* If you do not specify the "-jb" with a delete command, the archive chapter label will not be deleted. You can comment the chapter labels as a way of identifying each chapter backup. ARJ c archive -hbc -jz comments the last chapter label ARJ c archive "<<*" -jz comments the last chapter label ARJ c archive -hbc -jz -jb* comments all chapter labels ARJ c archive -hbc -jz -jb5 comments the label for chapter 5 jb0: clear chapter archive status This switch is used with the "y" command to convert a standard archive to a chapter archive. ARJ y archive -jb0 converts chapter archive to standard archive jb*: select all chapter backup files This switch is used to select all chapters. When it is used with the LIST command, ARJ displays all chapters. ARJ l archive -jb* displays all chapters This switch can be used with the DELETE command to remove all chapters of selected file(s). ARJ d archive -jb* *.bak *.tmp jb$: set modify of last chapter files This switch can be used with the ADD command to modify the most recent chapter files. ARJ a archive -jb$ dir\ *.wri jc: exit after Count of files The "-jc" option sets ARJ to exit early from an archive scan when the specified number of files have been extracted, listed, printed, etc. If no number has been specified, ARJ will set that number to the number of filename arguments. Examples: ARJ e -jc archive file1 file2 file3 ARJ e -jc5 archive *.bat Note that "*.*" is considered a count of ONE argument. This option does NOT WORK when modifying an archive. jd: ensure free Disk space In extraction mode, this option causes ARJ always to ensure that it will leave the user specified amount of disk space available. ARJ will skip files that would exceed the disk space available limit. Each file that is skipped will count as an error. The default free space is zero bytes. Example: ARJ e archive basedir\ *.doc -jd100K In the above example, ARJ will not extract any files that will cause the disk free space to be less than 100,000 bytes. The "K" is a synonym for "000". For example, 100K means 100000. In "l"ist or "v"erbose list mode, this option sets an error check at the end of the listing screen based upon the total of the original sizes of the files selected. If the total size would exceed the user specified free space limit, ARJ will report an error at the end of the listing screen. Example: ARJ l archive *.doc -jd10000 In this example, ARJ will report an error if the current available disk space minus the total of the *.doc files is less than the specified minimum of 10,000 bytes. Example: ARJ e archive *.* -jd0 In this example, ARJ will skip extraction of any files that would result in a disk full error. je: create self-Extracting archive This option causes ARJ to create a self-extracting .EXE file instead of an .ARJ file. This ARJSFX self-extractor is about 16K bytes in size and supports full pathname extraction. The "-je1" switch creates a smaller self-extracting .EXE file. The ARJSFXJR module is about 6K bytes in size. Both modules support display of the archive comment. The ARJSFX module also provides a query to continue the extraction after the display of the archive comment. When the "-je" option is used with the "-v" option, the new ARJSFXV module is used. The ARJSFXV module supports multiple volume archives. This is a very large module, about 27K bytes. The "-je -v" option combination requires DOS 3.0 and above to create the self-extracting archive. The suppress all messages option "-*" is only available to registered users in the commercial version of ARJ. Please note that including the SFX modules, DEARJ, or ARJ as part of a hardware and/or software package ALWAYS REQUIRES an ARJ distribution license EXCEPT when distributing between two computers already licensed for ARJ usage. As of ARJ 2.10, the SFX executable modules are pre-compressed using LZEXE. This may cause false indications with EXE scanning programs showing that an ARJ SFX archive is a LZEXE compressed file. Only the executable header module is LZEXE compressed. The actual archive is ARJ compressed, of course. The LZEXE header is modified to avoid extraction by UNLZEXE type programs. UNLZEXE may truncate an ARJ self-extractor of its archive. All SFX modules have an identification string located in the first 1000 characters of the executable. The identification string is "aRJsfX" without the quotes and in the exact case. The current commands ARJSFX supports are: Usage: ARJSFX [-command] [-switch(s)] [directory\] [file(s)] Commands: e: Extract files v: Verbosely list contents l: List contents x: eXtract files with pathname (default) t: Test contents Switches: a: show ANSI comments m: Make directories b: prompt for directory n: only New files c: skip time stamp Check o: Overwrite files d: display program option p: match with Pathname f: Freshen existing files s: skip Security check g: unGarble with password u: Update files i: no progress Indicator w: skip extract prompt k: long extract messages y: assume Yes on queries *: suppress all messages NOTE!!! ARJSFX uses the "-" character before all commands and switches. This is to allow extraction of files named e, l, etc. The default ARJSFX command is "-x" extract files with pathnames. At ARJSFX startup, the self-extracting archive will display any archive header comment followed by a query to "Continue extraction?". This query can be suppressed by specifying the "-w" option on the command line. The "-b" option prompts the installing user for the name of the install directory. If a target directory is specified on the command line, it is used as the default install directory which the installing user may change. Note that the target directory must end in "\"; otherwise, it will be interpreted as a filename spec. Example: ARJSFX C:\INST_DIR\ -b When extracting pathnames, ARJSFX will prompt for permission to create new directories unless the "-m" or "-y" option is specified. ARJSFX will create absolute or relative directories depending upon whether the root directory has been stored in the pathname in the archive. Saving the root is done using the "-jf" option of ARJ.EXE. To avoid extracting to paths, the archive creator should use the ARJ "-e" option to exclude path specs. The user extracting the SFX module can specify the "-e" command to extract to the current directory. ARJSFX does not support compression method 4. The ARJSFX and ARJSFXV modules support the ARJ-SECURITY envelope feature. The ARJ-SECURITY feature is only available as an add-on option. It is intended as a feature for software developers. The "-s" option allows the user to skip the testing of the ARJ-SECURITY envelope. ARJ will create a self-extracting module without an intermediate archive file. Example: ARJ a software *.* -je If you want to make a self-extracting module from an ARJ archive, use the "y" command. Example: ARJ y software -je IMPORTANT: When executing an ARJSFX module on a system with the CONSOLE device set to RAW mode, the ARJSFX module will abort on user input to avoid hanging the system. Use of the "-y" switch on the command line will avoid the problem. Example: ARJ230 -y The ARJSFXJR module created with the "-je1" switch is a stripped-down version of ARJSFX. ARJSFXJR does not support method 4 or text mode "-t1" or garbled "-g" archives. An ARJSFXJR module containing files with pathnames will extract to the paths. ARJSFXJR will automatically create directories as needed to build the paths. Example: ARJ y software -je1 The current commands ARJSFXJR supports are: Usage: ARJSFXJR [-switch(es)] [drive:][directory\] Switches: n: set ARJSFXJR to NOT count as an error the skipping of files o: set ARJSFXJR to overwrite existing files *: suppress all display messages You can specify a target_directory or drive or both. However, you must specify the ending "\" or ":" symbol. ARJSFXJR -o C:\SOFT\ -> self-extract into directory "C:\SOFT\" in overwrite mode. Both the ARJSFX and ARJSFXJR modules will by default extract to relative/absolute path specs if the archive contains relative/absolute path specs. More examples: Build an SFX module with absolute pathnames for extraction to the absolute pathnames: ARJ a -r -je -jf DISTRIB \product\*.* The user need only type "DISTRIB -y" to recreate automatically the "product" directory on the current drive. Build an SFX module with relative pathnames for extraction to relative pathnames: ARJ a -r -je DISTRIB \product\*.* The user need only type "DISTRIB -y" to recreate automatically the "product" subdirectory in the current directory. The user can recreate the "product" subdirectory in another directory by typing the command "DISTRIB -y directory_name\". Build an SFX module with relative pathnames for extraction to relative pathnames excluding the base directory: ARJ a -r -e1 -je DISTRIB \product\ *.* The user need only type "DISTRIB -y" to recreate automatically the files and subdirectories of the "product" directory in the current directory. Build an SFXJR module with filenames (no path specs). ARJ a -e -je1 DISTRIB \product\*.* The user need only type "DISTRIB" to extract automatically the entire contents of "DISTRIB.EXE" to the current directory. The current commands that ARJSFXV supports are as follows: Usage: ARJSFXV [-command] [-switch(s)] [directory\] [file(s)] Commands: e: Extract files v: Verbosely list contents l: List contents x: eXtract files with paths (default) t: Test contents Switches: a: show ANSI comments u: Update files b: prompt for directory w: Write to filename c: skip time stamp Check y: assume Yes on all queries d: check Disk space z: assume yes for queries f: Freshen existing files a - append file g: unGarble with password c - create directory h: display this screen k - disk space check i: no progress Indicator m - ok to extract j: overwrite readonly n - new filename prompt k: skip preset options o - overwrite file n: only New files r - erase type-ahead p: match with Pathname v - proceed to next volume r: set Recover mode #: start install at disk N s: disable file Share mode $: extract volume label Please note that the switch options for ARJSFXV use different letters than ARJ.EXE does. The "-#" option assumes that the first diskette is number ONE. Build an ARJSFXV module with filenames (no path specs). ARJ a -e -je -va A:INSTALL c:\product\*.* It is strongly recommended that multiple volume self-extracting archives NOT be built by modifying an existing multiple volume archive. With this new release, users can control the behavior of the self-extracting modules by embedding the command line within the self-extracting archive. This allows the builder to make self-extracting archives that create directories by default. The user may bypass the embedded command line by specifying any command line options at the DOS command prompt. Example: ARJSFX -x bypasses any embedded command line ARJSFX temp\ bypasses any embedded command line To implement this feature, you would insert the required command line as the first line of the ARJ archive comment. The beginning of the command line must be preceded by the two characters "))". Only the first 80 characters of the embedded command line will be processed. Example: )) C:\DIR\ -o -s options for ARJSFX The registered version of this software will not display the customized command line demonstration message. Please note that the specific switch letters may differ for the different ARJ self-extracting modules. jf: store/use Full specified path Normally, ARJ will strip all pathnames of drive letter and root symbol. This switch disables this action. When extracting with the "x" command from an archive that was built with this switch, ARJ will normally strip any drive letter and root symbol, unless the "-jf" option is specified again. Example: ARJ x archive -jf f:\data\1995\report.* The "-jf1" option will strip only the drive spec and NOT the root symbol. You can use either the "-jf" or "-jf1" option during extraction to force use of the root directory. As of ARJ 2.42a, ARJ will always filename match using the full pathname even for extraction. Example: ARJ x archive d:\temp f:\data\1995\report.* jh: set Huffman buffer size ARJ has a default static Huffman buffer size of 16,384 bytes. This buffer size is better for compressing executable files. The buffer size in ARJ 0.15 and earlier was set to 65,500 bytes. That size is better for large text files. You may specify a buffer size from 2,048 to 65,535 bytes. Example: ARJ a archive *.txt -jh65500 If you specify a Huffman buffer size, ARJ will use that size for all types of files specified by the archive command. ji: set Index filename The "-ji" switch is used to create an index file containing the filenames archived or meeting certain criteria. This is especially helpful when using ARJ to do multiple floppy type archives. This file SHOULD NOT be created on the floppy diskette if the floppy diskette is changed during the archival process. If the index file already exists, ARJ will append data to it. The index file contains three types of text lines. The first type is the volume name record. It contains the date, time, starting file position, and the archive name. The second type is the filename record. It contains only the filename. The third type only occurs during archival with testing "-jt". It is a line containing "Testing " and the archive name. This information is also useful for restarting "-v" multiple volume archives. You need the filename and the starting file position. The "-ji" switch will log the following events: a, f, m, u - Log actual filenames added to archive and if testing is enabled, the actual filenames that failed testing. d - Log archived filenames deleted. e, x - Log archived filenames successfully extracted. Extracted files with CRC errors are NOT logged. j - Log archived filenames added to archive. l, v - Log archived filenames listed. t - Log archived filenames that failed testing. w - Log archived filenames that contain string matches. This logging function is especially helpful when testing and searching archives. The "-hi" option will set ARJ to write more details to the index file. jk: Keep temp archive on error When the "-jk" switch has been specified, ARJ will keep the temporary archive during an aborted archive build/update. During a failed build, ARJ will modify the temporary archive to make it usable by removing the broken portion. jl: display only filespecs The "-jl" option sets ARJ to display only the filespec of a filename during the progress displays. This will simplify the display output. jm: set Maximum compression The "-jm" switch sets the maximum compression mode. This mode is used with method 1 "-m1" to increase its compression. This may increase compression time significantly. You can get a 1 to 5 percent improvement in compression with ARJ -m1 -jm. The "-jm1" option provides slightly less compression than "-jm" at a faster speed. This can range from slightly faster to much faster. Use of "-jm" with "-m2", "-m3", or "-m4" is NOT SUPPORTED. jn: set restart Name The "-jn" switch is used to restart interrupted multiple volume archives in conjunction with the "-jx" switch. All selected files are skipped up to but not including the named file. Example: ARJ a volume -v360 -r -jn\BIN\TREE.COM -jx1230 In the above example, all files scanned up to \BIN\TREE.COM are skipped. Archiving will start at file position 1230 of file \BIN\TREE.COM. IMPORTANT!!! The exact name of the starting file must be specified according to the wildnames/filespecs specified. This name is the same as displayed by the Adding filename display and the same as written to the "-ji" index file. Please note that \DOS\TREE.COM is not considered the same as DOS\TREE.COM with this option. New at ARJ 2.39 is the feature where ARJ will automatically scan the previously written index file ("-ji") to get the necessary restart information. You only need append "-jn" to the previous backup command line. This option will not work without the index file. ARJ will automatically set the correct volume name. Example: ARJ a a:backup c:\*.* -r -vvas -jiINDEX.FIL ARJ a a:backup c:\*.* -r -vvas -jiINDEX.FIL -jn jo: query when updating an archive file The "-jo" option has two flavors. The "-jo" switch is used to query the user when using the ARJ "a" or "m" commands to add files to an archive. Before ARJ overwrites an existing internal archive file when using "-jo", ARJ will query the user with "Update <filename>? ". Without this option, ARJ will overwrite the internal archive file without querying. jo: extract to unique Output names The "-jo" switch during extraction allows automated handling of duplicate filenames. On extraction with the "-jo" switch where the output file already exists in the target directory, ARJ will attempt to generate a unique filename by changing the file extension to a 3 digit number from .000 to .999. If ARJ cannot generate a unique name, it will skip extracting the file. Do not try to extract multiple volume split files in separate extraction sessions using the "-jo" option. ARJ will not be able to determine the correct output filename. New to this release, the "-jo" option during extraction works along with the "-f" and "-u" type options. In other words, if you want to freshen a set of files from an archive, the use of the "-jo" option will generate unique names for any files extracted. Example: ARJ x archive *.* -u -jo jp: Pause after each screenful This switch will cause ARJ to pause after listing each screenful of data for the "l", "p", "v", "w" commands. Press the ENTER key to continue the listing. You can also enter "quit" to exit ARJ. In one special case, "ARJ -? -jp", the use of the -jp switch toggles page pauses off, because by default in help mode, pausing is on. You can specify the page size with the "-jp" option as in "-jp50". This also turns on the pause mode. If you wish to use this in ARJ_SW, it is suggested that you use "-jp50 -jp-" to set the page size and to turn off the pause mode. jq: set string parameter The "-jq" option is used to supply additional parameters to the ARJ w and ARJ b commands. If the parameters contain blanks, then the entire "-jq" option must be enclosed by two double quote marks. See the "w" and "b" commands for the correct "-jq" syntax. jr: Recover broken archive files This switch is used to access headers and files in an archive that has been corrupted either with bad data or missing data. This switch lets ARJ find the next valid header for listing, extraction or testing. ARJ will continue to look for headers until it finds the end of archive marker. If the archive is damaged, ARJ may display a message stating that it encountered the end of file unexpectedly. This switch also will allow extraction of files with CRC or Bad file data errors. Normally, ARJ will delete such extracted files. If file header data has been corrupted, ARJ will be unable to recover any file data associated with that header. As of ARJ 2.30, "Bad file data" errors will not abort the recovery process. Example: ARJ e archive -jr The "-jr1" version of this switch allows processing of damaged ARJ archives that have an end of archive mark in the middle of the archive. However, the use of this switch will always cause ARJ to display an "unexpected end of file" error message and to return a non-zero errorlevel. js: Store archives by suffix This switch is used to set ARJ to store and not compress files with the following extensions: .ARJ, .ZIP, .LZH, .PAK, .ARC, .J, .RAR, .UC2, .ZOO The file extensions can be specified as follows: ARJ a archive -js.zoo.ice.gif The above command will store files with extensions ending in .ZOO, .ICE, and .GIF. This overrides the defaults. You can use the environment variable ARJ_SW to set up your own defaults as follows: set arj_sw = -js.arj.zip.lzh -js- The "-js-" turns off the option by default so that when you specify the "-js" switch on the command line, ARJ will already know what extensions you want to store. The "-js" switch will recognize "." alone as a file extension indicating no file extension as in "-js." and "-js..arc" jt: Test temporary archive The "-jt" switch can used to set ARJ to execute an archive integrity check on an intermediate temporary archive before overwriting any pre-existing original archive. If any error occurs, ARJ will not overwrite the original archive. When used with the "-w" switch option, ARJ will also test the final archive file as well as the temporary archive before deleting any input files. Example: ARJ m archive *.c -jt The "-jt" switch can be used with extract type commands to set ARJ to verify the archive before doing any extraction of files. If the archive fails verification, the extraction is NOT attempted. This is useful for handling MAIL packets where archive corruption due to a bad file transfer is a fairly frequent event. Example: ARJ e archive -jt The "-jt1" switch allows an actual file contents comparison in addition to the normal file CRC calculation check. This option can also be used with the ARJ t (test) command. When used with the ARJ t command, ARJ "-jt1" will use the base_directory option and the filename stored in the archive to locate the original file. When used with the ARJ add/move/update type commands, ARJ will use only the filename stored in the archive to locate the original file. Therefore, the "-jt1" option does NOT work with the "-e" option or when the original filename has a drive letter or root directory in it and you did not specify "-jf". Examples: ARJ t -jt1 archive dir\ ARJ a -jt1 archive e:\temp\*.* -jf The "-jt2" switch allows the same features as "-jt1" except that the file compares are only done for the newly added/updated files. This avoids the situation where the some of original input files are missing or have changed. NOTE that a problem can occur with the "f" and "u" commands when files in the archive are NEWER than the files being added. ARJ will considered the file up-to-date and added and will do a file compare. Example: ARJ u -jt2 archive dir\ ju: translate UNIX style paths This switch causes ARJ to translate any subsequently encountered pathnames to MS-DOS style from UNIX style. This switch also causes translation of filenames entered as a result of ARJ prompts such as in comment filenames. Example: ARJ a archive -ju /soft/*.c jv: set Verbose display This switch sets ARJ to display more information during the "t"est, "l"ist, and "ex"tract commands. Example: ARJ t archive -jv The "-jv" switch causes the "v" command to display only the pathnames to the screen. The "-jv switch causes the "l" command to display chapter range numbers instead of the CRC value. The "-jv1" switch causes the "v" command to display the archive data in manner suitable for sorting on various fields. The "-jv" switch will set the "p", "s", and "w" commands to display IBM graphics characters (128 to 255). When updating a file in an archive with a file that is NOT newer and if the -jv option is selected, ARJ will display a message that there is "no change". jw: set extract output filename The "-jw" option allows you to specify the name of the extraction output file. You should only select one file to extract when using this option. This is similar but not exactly the same as using the "p" command with DOS output redirection. Using DOS redirection would cause all of the output of the extraction to be put into the output file. Using "-jw" would set ARJ to prompt for overwrite permission per each file extracted to the output file. This option may be needed when trying to output binary data to a printer. Example: ARJ e archive printer.dat -jwLPT1 jx: start at eXtended position This switch is used to continue a file onto a new archive manually. This switch is normally for use when a multiple volume "a" command has aborted. Example: ARJ a arjvol.a01 manual.doc -jx100000 This example archives manual.doc starting from file byte position 100,000 and on. In extraction mode, this sets ARJ to extract a file to an output file at a specified starting position. Example: ARJ e -jx2000000 archive file1 This example extracts the file "file1" to file1 starting at position 2,000,000 or at the end of the file. This is similar to using the command "ARJ p archive >> output". To duplicate this redirection with ARJ would require the following: ARJ e -jx2000K -jwoutput archive NOTE that the -jx option is NOT functional when adding a file to an archive that already contains one or more files. jy: suppress queries assuming YES This switch is used to suppress individual ARJ user prompts. Syntax: ARJ e archive -jy<flags> where <flags> is one or more of the following characters: a, c, d, k, n, o, s, v. For each flag selected, ARJ will act as if you had answered YES to the suppressed question. A - skip append query during a multi-volume extraction C - skip create directory query D - skip delete files query K - skip disk space availability query N - skip new filename prompt O - skip overwriting existing file query R - erase all typeahead before prompting S - skip scanned enough text query V - skip ok to proceed to next volume query Y - accept single character Y/N/A/Q inputs Example: ARJ x volume -v -jyaco suppress append, create, and overwrite prompts. ARJ will allow you to specify individual "jy" options in separate switch strings as in "-jyy -jyr". You may inhibit a switch as in "-jyr-". As with other switches, the "jy" switches toggle as in "-jyr -jyr". As a clarification of older documentation, the "-jyv" option will disable the next volume prompt EVEN with removable media. The global "-y" option does not disable the next volume prompt with removable media. jz: supply file for file comment The "-jz" switch has been provided to facilitate batch commenting of one or more files within an ARJ archive. Only one comment file can be specified. That file will be used to comment each file specified on the command line. A comment file containing only a single blank can be used to erase comments from ARJ archives. Syntax: ARJ c archive file1 -jzcomment.txt ARJ c archive file1 -zheader.cmt -jzfile.cmt h#: append current date/time string The "-h#" switch sets ARJ to append the current date string in the form YYMMDD to the current archive name while keeping the file extension the same. The "-h#1" switch sets ARJ to append the current time string in the form HHMMSS to the current archive name while keeping the file extension the same. The "-h#2" switch sets ARJ to append the current date-time string in the form DHHMMSS to the current archive name while keeping the file extension the same. In a ten day period, this option can be used to generate unique archive names. Examples: ARJ a XX -h# *.c creates archive name XX931209.ARJ ARJ a YY -h#1 creates archive name YY123000.ARJ ARJ a Y -h#2 creates archive name Y8123000.ARJ This function does NO checking for exceeding the proper filename length. There are no options for rearranging the date/time formats. ha: ignore readonly Attribute The "-ha" switch sets ARJ to reset the attributes of a file to be overwritten or a file to be deleted. This allows the overwrite or delete operation to proceed. A slight performance degradation may result from using this option. Examples: ARJ e archive -ha ARJ m archive -ha dir\*.* hb: select by file attribute or type This switch is used to select by file attribute or file type. The "-hb" option can be used to select files by their attributes (normal, readonly, hidden, system, directory, and archive bit). "Normal" is defined as files that are NOT the following: readonly, hidden, system, label, chapter header, or directory. For extract/list operations, you can also select chapter labels and volume labels. By default, the "-hb" option by itself selects all types of files. If you specify a letter symbol representing a file type, you are selecting ONLY that type of file. You can specify a series of letters representing all of the file types that you want to select. For example, the "-hbdr" option selects both directories and readonly files. Selections are additive. Example: -hbnr select only normal and readonly files Single letters represent each attribute or type. a - archive bit set b - archive bit clear h - hidden r - readonly s - system d - directory n - normal files (not d, h, r, s, l, c) l - volume label c - chapter label f - abbreviation for "ndhrs" The archive bit selection ("a" or "b") is a special case. If you have selected no types of files EXCEPT files with the archive bit set, ARJ will select from the set of all file types. If you have selected one or more file types, ARJ will select based upon the archive bit from the selected set of files types. Examples: -hbhrsa select hidden, readonly files with archive bit set -hba select all files with archive bit set Add/update options : f, d, r, h, s, n, a, b. Extract/list options: f, d, r, h, s, n, a, b, c, l. Examples: ARJ a archive *.* -r -hbrs select only readonly and system files ARJ a archive *.* -r -hbd store only directories ARJ l archive *.* -hbr list only readonly files ARJ l archive -jb* -hbc list chapter headers Notes: The option "-hb" with no letter options is an abbreviation for "-hbndhrslc" (everything). hc: execute DOS Command at ARJ start The "-hc" switch sets ARJ to execute a DOS command at the start of the execution of ARJ immediately after the command line switch options have been processed, but before the wildcard search is started. This can be used to clear the screen to hide the command line or to provide a pause option to allow swapping diskettes. Examples: ARJ a -hcCLS archive -gpassword ARJ a -hcPAUSE archive *.* he: skip test of security Envelope The "-he" switch sets ARJ to skip the verification step when accessing an ARJ-SECURED ARJ archive. If an ARJ archive has a damaged ARJ-SECURITY envelope, you will have to use the "-he" option to extract the archive. he1: set error on security Envelopes The "-he1" switch sets ARJ to abort with an error code of 4 when processing a possibly ARJ-SECURED archive. This is useful as a REARJ.CFG option for ARJ. This will prevent REARJ from converting an ARJ-SECURED archive to the same or another format. Examples: ARJ l secured.arj -he1 hf: set short filenames only This switch disables Windows 95 long filename handling. ARJ will use the standard DOS 8.3 APIs (DOS shortnames) to do its processing. Files so archived with this switch can be extracted under Windows 95 and DOS. This switch can be used while listing a dual-name archive under Win95 to list/process the shortnames. hf1: set/use shortname in file comment or extract with W95LNAME.nnn name This switch in Win95 during archival sets ARJ to build a dual-name compatibility archive by storing the shortname in the filename field and the longname in the file comment field, so that both long filenames and short filenames are stored in the archive. Such a dual-name archive is compatible with older versions of ARJ. New versions of ARJ process such an archive according to the current operating system environment. Under Win95, the long filenames in the archive are used. Under MS-DOS, the short filenames are used. This processing is automatic for this release of ARJ. The "-e1" option does not affect the short name that is stored. During extraction this switch sets ARJ to extract files from a Win95 archive (built without "-hf" option) by using generated names. ARJ will generate a short name based upon "W95LNAME.000" and its sequence number in the archive. Specifying the "-ji" option with an index filename along with "-hf1" will generate an index file with the W95LNAME.000 names and the associated long filenames. The long filenames are quoted. Example: ARJ x archive -hf1 -jiindex.log This option with "-ji" can be useful when trying restore long filenames on a system that allows long filenames such as OS/2, WinNT, or Linux. Please note that modifying a dual-name archive outside of Windows 95 is possible but it may produce an archive with some dual-names and some not. The "-hf1" option has no effect on a dual-name archive during extraction. hf2: use long filenames in DOS This switch sets ARJ to attempt to extract using the long filenames stored in the archive. No modification is done to the long filenames except by DOS itself. This switch also sets ARJ to use the standard DOS 8.3 APIs for processing. Because of the shortening of the filenames by DOS, duplicate filenames may result. hg: specify garble module filename This switch is used to specify the filename of the encryption module to be used when encrypting a new archive. The default filename is "ARJCRYPT.COM". ARJCRYPT.COM contains a new encryption scheme that is incompatible with earlier releases of ARJ. ARJ will look for the encryption module in the directory that contains the copy ARJ.EXE that is being executed unless the specified module name contains a path symbol "\" as in "ARJ\OLDCRYPT.COM". If you want to use a module in the current directory, you should specify the name as in ".\ARJCRYPT.COM". The "." indicates the current directory. With an existing archive, ARJ detects the encryption scheme that was used to encrypt the archive and uses the same scheme regardless of whether the "-hg" option is specified or not. hi: full detail display in Index files The "-hi" switch when used with the "-ji" switch sets ARJ to include the file date-time stamp, the original file size, the compressed file size, the compression ratio, and the filename in the index file. Example: ARJ a a:backup c:\*.* -r -va -jiINDEX -hi hk: build data protection file The "-hk" switch sets ARJ to create an ARJ-PROTECT data protection file. This file is named similarly to the created archive except for an "X" in the beginning of the file extension as in NAME.XRJ. This ARJ-PROTECT file contains necessary information to repair damage to the original archive. The "-hk1", "-hk2" .... "-hk9" options will generate larger ARJ-PROTECT files affording a higher probability of a successful repair. If the archive already exists, an ARJ-PROTECT data file can be created via the "t" command. Example: ARJ t archive -hk builds archive.xrj file For users who do not like the separate protection file feature, there is a work-around. Using the new "-s3" option (keep original time-stamps), the user can add the ARJ-PROTECT file to the protected archive and extract it later for repair purposes. Example: ARJ a docs *.txt -hk builds protected archive ARJ a docs docs.xrj -s3 inserts protect file ARJ e docs docs.xrj -s3 -d extracts and removes protect file restoring the original archive ARJ q docs repairs archive hl: return error for Listfile error The "-hl" switch sets ARJ to report the "file not found" type of errors when processing the filenames in an ARJ listfile during an "add" type command (a, f, m, u). ARJ will subsequently return a non-zero DOS errorlevel when such an error has been found. Previous versions of ARJ ignored these types of errors. Example: ARJ a a:backup !listfile -va -hl hm: increase filename capacity The "-hm" switch sets ARJ to transfer the list of filenames to be archived from the limited conventional memory to file storage. This allows a much larger number of files to be processed (up to 65,000). This option is ignored for all ARJ commands except "a", "f", "j", "m", "u". Normally, this switch sets ARJ to wait until it is out of memory storing filenames into a list before transferring that list to a temporary file. That temporary file is put in the current directory or the special work directory if specified (-hm!F:\) or XMS memory is specified (-hm!). However, there may be a few cases where ARJ will run out of memory doing other tasks while it is storing this list. In these cases, ARJ will abort. The user can specify a numeric argument of "1" to this switch to force ARJ to transfer the list to file storage immediately. The "-hm" work directory is specified by appending a "!" to the "-hm" or "-hm1" options and then appending the filename to the option. See below. Examples: ARJ a archive c:\*.* -r -hm ARJ a archive c:\*.* -r -hm1 ARJ a a:archive c:\*.* -r -va -hm500!F:\ ARJ a a:archive c:\*.* -r -hm!G:\temp\ The use of a RAMDISK directory will provide the fastest operation. hm!: increase filename capacity with XMS memory The "-hm!" option with no pathname appended to it will set ARJ to store its list of filenames in XMS memory. List processing will be faster using XMS memory as opposed to using disk space. If no XMS memory is available, ARJ will use conventional memory and then disk space if needed. If there is not enough XMS memory available for the internal list, ARJ will abort. The XMS accelerator in Hurricane 2.0 for Windows MAY interfere with this switch while in Windows. hn: specify non-existent filespec The "-hn" switch sets the filespec that does NOT match any file. The default filespec is "...". However, on some systems like using NOVELL, there is a valid filespec "...". Since ARJ sometimes needs a filespec that is strictly a placeholder, this option should be used to specify some name that does not exist on disk. This option must be specified prior to any use of the non-matching filespec. Setting it via the ARJ_SW variable is an excellent choice. Examples: ARJ e -hn#### archive #### -zcomment.txt SET ARJ_SW=-hn#### ho: Only extract files with matches The "-ho" switch used with the "e" or "x" extract commands allows file extraction based upon a text search. ARJ will prompt the user for text strings to search unless the "-jq" option has been specified. See the "-jq" option in ARJ.DOC for detailed use information. ARJ will extract a file within an archive if the file contains at least one occurrence of any of the specified search strings. Examples: ARJ e archive -ho ARJ e archive -ho -jq+3+textstring ho1: Only extract files without any matches The "-ho1" switch used with the "e" or "x" extract commands allows file extraction based upon a text search. ARJ will prompt the user for text strings to search unless the "-jq" option has been specified. See the "-jq" option in ARJ.DOC for detailed use information. ARJ will extract a file within an archive if the file contain NO occurrences of any of the specified search strings. Examples: ARJ e archive -ho1 hq: ignore open access error on adds This switch sets ARJ to ignore the error that occurs when ARJ cannot open a file for lack of permitted access during an add-type command and/or a compare command. This is DOS error code 5. This option applies only to files being added to a new archive and/or being compared. For an existing archive, this option will be ignored during the add operation, but NOT during a subsequent compare operation. Typically, this switch would be used during network access or in Windows 95 where a file is open for exclusive use by another process. Normally, in this situation, ARJ would return a non-zero DOS error level. However, if this switch is specified, ARJ will NOT return a non-zero error level due to this specific open failure. If you use the "-ji" option to set up an index file, ARJ will log any file that it cannot open. hq1: ignore open not found error on adds This switch sets ARJ to ignore the error that occurs when ARJ cannot open a file because it cannot be found during an add-type command and/or a compare command. This is DOS error code 2. This option applies only to files being added to a new archive and/or being compared. For an existing archive, this option will be ignored during the add operation, but NOT during a subsequent compare operation. This open error typically happens when a temporary file that ARJ has found to archive is purged by another process before ARJ can actually open and compress/compare it. This is not the same error as when a user specifies a filename on the command line and ARJ cannot find it. If you use the "-ji" option to set up an index file, ARJ will log any file that it cannot open. hq2: ignore open access error and not found error on adds This switch sets ARJ to ignore both the no access error and the not found error during an add-type command for new archives as above. hr: force processing of successive archives through errors. The "-hr" switch sets ARJ to attempt to continue processing successive archives even when they contains errors. This option is aimed at ARJ wildcard use such as in the "ARJ t *.ARJ -hr" command. hs: disable file Sharing The "-hs" switch sets ARJ to disable its file sharing feature. This may be necessary for some unusual applications. ht: specify Target directory This switch is provided as an alternative to the standard method of specifying a target directory. This new option can be specified in the ARJ configuration file or in the ARJ_SW environment variable as well as on the command line. Examples: ARJ x archive *.* -htD:\DESTDIR SET ARJ_SW=-hf -htD:\DESTDIR hu: allow the Updating of multiple volume archives The "-hu" switch sets ARJ to allow the updating of multiple volume archives. At this version, by default, ARJ does not allow updating of multiple volume archives because of the possibility of losing data. Example: ARJ c archive -hu -zcomment.txt hv: verify the ARJ version number The "-hv" switch is used to verify the ARJ version number and/or whether the ARJ program is registered. If the "-hv" option is specified by itself or with an appended "R", an unregistered ARJ will abort with an errorlevel of 1. If a version number string is appended to the "-hv" option, a lower version numbered ARJ will abort with with an errorlevel of 1. Examples: ARJ a archive -hv check if registered ARJ a archive -hvr check if registered ARJ a archive -hv2.50 check for version >= 2.50 ARJ a archive -hvr2.50 check if registered and version 2.50 or greater hw: modify search filename display The "-hw" switch sets the ARJ w command to display the "Searching ...." filenames messages in a scroll saving format. Filenames of files that do not contain string matches will be overwritten on the screen. The "-hw1" switch sets the ARJ w command to display ONLY the "Searching ...." filenames messages for files that contain string messages. You should disable the progress indicator with the "-i" option. hx: specify archive file extensions The "-hx" switch allows the user to specify what the default file extension or extensions that are to be used by ARJ to access archive names that are not specified with file extensions. ARJ will assume that the first extension specified will be the main default extension. Examples: ARJ a archive *.* -hx.SDN assumes default .SDN file extension ARJ l archive -hx.SDN.ARJ looks for archive.SDN and if not found, then looks for archive.ARJ ARJ COMMAND OPTIONS: Some of the following options have variations such as -s as in -s, -s1, -s2. The following options work for ALL ARJ commands. !names.lst -o -ob -od -- -+ -& -! -i -l -r this affects wildcarded archive names, too. -s -x -y -ja -jl -jt -ju -jy -h# -h#1 -hb -hc -he -he1 -hn -hr -hs -hv -hx The following options work for all ARJ commands that modify ARJ archives. -k -s -w -z -jb -je -jk -jz -hm -hu In addition the following options work for ARJ a, f, m, u commands. -a -b -m -r -t -j# -jh -ji -jm -jn -js -hi -hk -hl -hm The following options work for ARJ y command. -jb -je -g -hg The following options work for ALL but the ARJ a, f, m, u commands. The name of the archive can be a wildspec. -# -d -e -p -jr The following options work for the ARJ a, f, m, u, e, x commands. -$ -c -f -g -n -u -jf -ji -jx -hi The following options work for the ARJ e, x commands. -d -jc -jw -ho -ho1 The following options work for the ARJ l, v commands -n -jp The following options have limited use. -q - works for all commands except j, l, n, o, t, v, w, y -v - works for l, v, w commands -jc - works for e, x, l, v commands -jp - works for l, v, w commands -jq - works for b, w, commands -jv - works for most commands -hw - works for w command SAMPLE ARJ COMMANDS: a: Add files to archive ARJ a archive ARJ a archive -n ARJ a archive -f ARJ a archive -jt ARJ a archive -jt1 ARJ a archive -jt2 ARJ a archive -q ARJ a archive -r ARJ a archive dir\ -o ARJ a archive dir\ ARJ a archive dir\ *.doc *.exe ARJ a archive !names.lst ARJ a archive -- -name-.txt ARJ a archive name1 name2 name3 ARJ a a:archive -we:\ -vas c:\ -r -b2 ARJ a a:archive.001 -we:\ -vvw360 c:\ -r -b1 ARJ a archive -vw360 c:\ -r -y ARJ a archive c:\ *.* -r -jt1 -jf b: execute Batch or DOS command ARJ b archive name.txt ARJ b archive -jwOUT.NAM ARJ b archive SHEZ.EXE -jwSHEZ.EXE ARJ b archive *.exe -jwTEMP.EXE "-jqTEMP -help" c: Comment archive files ARJ c archive ARJ c archive -z ARJ c archive -zcomment.txt ARJ c archive -zNUL ARJ c archive file1 -jzcomment.txt ARJ c archive *.doc -jzNUL d: Delete files from archive ARJ d archive *.doc ARJ d archive *.* -n ARJ d archive *.* -y ARJ d archive !names.lst e: Extract files from archive ARJ e archive *.doc ARJ e archive *.doc -d ARJ e archive -jd50000 ARJ e archive -jo ARJ e archive -c ARJ e archive dir\ *.doc -jt ARJ e archive *.doc -y ARJ e archive -# 10 15 20-40 f: Freshen files in archive ARJ f archive ARJ f archive -r ARJ f archive dir\ -r ARJ f archive dir\ *.doc -r ARJ f archive dir\ -r -jt2 g: Garble files in archive ARJ g archive -gpassword ARJ g archive *.doc -gpassword ARJ g archive -g? ARJ g archive -gpassword -hg i: check Integrity of ARJ.EXE ARJ i ARJ i c:\bin\arj.exe j: Join archives to archive ARJ j archive name1.arj name2.arj name3.arj ARJ j archive *.arj ARJ j archive arjsfx.exe ARJ j archive *.arj -o911201 ARJ j archive *.arj -r k: purge bacKup files in archive ARJ k archive *.* ARJ k archive *.* -y ARJ k archive *.doc -n l: List contents of archive ARJ l archive ARJ l archive *.doc ARJ l archive -o911201 ARJ l archive -o911201 -ob911231 ARJ l archive -n ARJ l archive -jp m: Move files to archive ARJ m archive ARJ m archive *.doc ARJ m archive dir\ *.doc ARJ m archive dir\ *.doc -o ARJ m a:archive.001 dir\ -r -vvwas -jt2 n: reName files in archive ARJ n archive ARJ n archive *.doc ARJ n archive !names.lst ARJ n archive -o911201 o: Order files in archive ARJ o archive !names.lst ARJ o archive *.bat *.exe *.doc ARJ o archive file1 file2 file3 p: Print files to standard output ARJ p archive ARJ p archive -jp ARJ p archive *.doc ARJ p archive -o911201 ARJ p archive name.txt > PRN r: Remove paths from filenames ARJ r archive ARJ r archive *.doc ARJ r archive -o911201 -ob911231 s: Sample files to screen with pause ARJ s archive ARJ s archive *.doc -y ARJ s *.arj -y -r t: Test integrity of archive ARJ t archive ARJ t archive *.exe ARJ t archive !names.lst ARJ t archive -jt1 u: Update files to archive ARJ u archive *.doc ARJ u archive *.doc -jo v: Verbosely list contents of archive ARJ v archive ARJ v archive *.doc ARJ v archive -jv ARJ v archive -jv1 ARJ v archive -jp w: Where are text strings in archive ARJ w archive ARJ w archive -hw ARJ w archive -jp ARJ w *.arj -jp ARJ w *.arj *.doc ARJ w *.arj *.txt -jq+5+string ARJ w archive "-jq-3-to be or not" x: eXtract files with full pathname ARJ x archive *.doc ARJ x archive *.doc -d ARJ x archive -jd50000 ARJ x archive -jo ARJ x archive -c ARJ x archive dir\ *.doc ARJ x archive -jf ARJ x archive *.doc -jyc y: copY archive with new options ARJ y archive -je ARJ y archive -je1 ARJ y archive -jb ARJ y archive -jb1 ARJ y archive -jb2 ARJ y archive *.bat -jb2 ARJ_SECURITY ENVELOPE: The ARJ-SECURITY ENVELOPE feature provides a facility similar to other archivers. This feature disallows any type of modification, even commenting, to an ARJ-SECURE sealed archive by ARJ. Moreover, there are additional internal checks to determine if the ARJ-SECURE sealed archive has been modified in any way. This EXTRA cost feature is intended for use by software developers who distribute their software in archived format and is only available for a special fee. However, there can be no guarantee that this mechanism cannot be defeated. When accessing an ARJ-SECURED archive, ARJ will display a message indicating that ARJ is verifying the security envelope. If the envelope is damaged, a message will be displayed indicating so. If the envelope is intact, then the ARJ-SECURITY signature of the user "sealing" the archive will be displayed. If the security envelope has been tampered with or the archive has suffered data corruption, ARJ will display a message stating that the security envelope has been damaged. In addition, ARJ will abort processing the archive. The ARJ "-he" option and the ARJSFX "-s" option will skip the envelope verification. The most likely causes of an invalid envelope are that the file was corrupted in transmission or that the archive was tampered with. KNOWN ARJ ISSUES/PROBLEMS: Apparently ARJ.EXE and LHA.EXE (possibly other archivers) will NOT function properly in a WINDOWS DOS box while the REMOVEIT Smart Custodian (July 7, 1995, Vertisoft) is running. This may be also be true for later versions of REMOVEIT. The -hm! option may not work in a WINDOWS DOS box while the XMS accelerator option of Hurricane 2.0 is enabled. Under MS-DOS 4.01, ARJ may not extract LARGE (greater than 32MB) files from multiple volume archives properly. The "dir" reported size may be incorrect. A simple "CHKDSK /f" will correct the size. This problem is due to a BUG in MS-DOS 4.01. Microsoft Corp. has fixes available for several DOS 4.01 bugs including this one. Due to the inner workings of the compiler Turbo C++, ARJ may run out of memory if your computer is configured with thousands of bytes of environment variables. The "-vs" option of ARJ may not function properly when ARJ is trying to archive several thousands of files. This is due to a lack of free memory to execute any external commands. The use of the "-hm" option will free up memory. When using a working directory, ARJ does not check for disk space before overwriting the original archive. Be sure you have enough space before updating an archive using the "-w" switch. Because of a bug with extended archive header processing, you should convert to ARJ 2.10 and above as soon as practical. This bug is NOT a current problem because no version of ARJ supports the use of the extended header. If you have garbled (-g) ARJ archives that were created by ARJ 2.21 and the garbled files were stored (-m0) by ARJ, you may need to refer to ARJ 2.30 to extract those files without getting a CRC error. TSRs that activate via HOT KEYS may be inhibited by ARJ during user keyboard input. This is a "feature" of the Turbo C++ getc() function. A partial workaround is to use the ARJ "-jyry" option to go to single key query mode. A similar problem occurs with HYPERDISK and staged writes. HYPERDISK's timer delay appears to be inhibited during ARJ user keyboard input such as during "Ok to .... volume/diskette?". This causes an error when you swap to the next diskette. The workaround is to use the ARJ "-jyry" option to go to single key query mode. There is a reported problem using ARJ and floppy disk drives when using the disk cache program SUPER PCKWIK 3.30 with advanced diskette support (/D+). The system may occasionally hang when ARJ attempts to read/write the diskette. You may also get CRC or Bad file data errors. Disabling the SUPER PCKWIK option with /D- appears to remove this problem. Other programs have similar problems with this feature of SUPER PCKWIK. ARJ ERROR MESSAGES: See the document ERRORS.DOC. COMMONLY ASKED QUESTIONS: 1) I have forgotten my password to an important garbled ARJ archive. Is there an easy way to recover my lost files? ANSWER: Sorry. Generally speaking, there is no easy way. There is brute force trial and error. 2) During extraction, ARJ aborts with a "Bad header" or "Bad file data" error message. How do I recover my files? ANSWER: Using the -jr option of ARJ, you should be able to recover the uncorrupted files in the archive. The corrupted files are unrecoverable. As a preventative, you can use the -hk option to build an error correction recovery file that will allow you to correct minor data corruption problems. 3) How do I backup a directory and its subdirectories and files to multiple diskettes? ANSWER: You should use a command as follows: ARJ a a:archive c:\dir\*.* -va -r -a1 The -va option assumes that you are using formatted blank diskettes. The -r option sets ARJ to recurse subdirectories. The -a1 option sets ARJ to store empty directories. 4) Do I have to register ARJ if I use it at home for my personal computer activities (BBSing, backup, sharing files)? ANSWER: No, you do not have to register ARJ for such activities. Instead, please share ARJ with a friend as a way of showing your appreciation. 5) Can I distribute ARJ self-extracting archives or ARJ.EXE without a license? ANSWER: You may share these files with others for personal use. However, you cannot distribute self-extracting files publicly without a license. You cannot distribute ARJ.EXE to install software without a license. The UNARJ.EXE program is freely available to install software. 6) Can I distribute ARJ archives freely? ANSWER: Any ARJ archives (not self-extracting) can be distributed freely. Commercial users must have a registered ARJ to make the ARJ archives. 7) ARJ displayed an error message indicating it ran out of memory backing up my disk with 20,000 files on it. How can I proceed? ANSWER: You should specify the -hm option to set ARJ to use disk space to handle all of the filenames. 8) I am trying to extract a multiple volume archive. How do I get ARJ to prompt for the second diskette? ANSWER: You need to specify the -v option to set ARJ to prompt for subsequent diskettes. 9) How do I extract an ARJ archive recovering the original pathnames? ANSWER: Use the "x" command as in "ARJ x archive". 10) How do I create a self-extracting archive? ANSWER: Use the -je or -je1 options as in "ARJ a archive *.* -je". 11) How do a save empty directories in an archive? ANSWER: Use the -a1 or -hb option. ARJ TECHNICAL SUPPORT: I have received many useful suggestions from users all over the world. Many of those suggestions are in this version or will be incorporated in later versions of ARJ. I will try to resolve software problems with ARJ as they are made known to me. Please notify me of any ARJ problems by mail, email, fax, or via the ARJ support BBSes mentioned below. I will strive to keep ARJ a robust, stable and useful product. I will try to support unregistered users during their evaluation period, but please read the ARJ documentation first. Registered users will be eligible to receive technical support by mail, telephone, fax, or electronic mail. Please try to limit requests for ARJ COMMAND HELP. Refer to the ARJ documentation FIRST. The time I spend answering simple questions is time I cannot use to IMPROVE ARJ. *************************************************************** DO NOT ASK FOR TECHNICAL SUPPORT IN THE CASE OF LOST PASSWORDS! *************************************************************** ARJ AVAILABILITY: The latest version of ARJ can be obtained from the following sources: ARJ SUPPORT BBSes: See ARJ_BBS.DOC ARJ is available from a number of other BBSes, but I can only vouch for the integrity of the archive if the ARJ###.EXE verifies its ARJ-SECURITY envelope as valid. If no security envelope exists, then the data has been re-archived and there is no assurance of data integrity. If none of the above sources are suitable, you may order a copy of the latest version of ARJ directly from the author. Send a check or money order for five dollars (US) to cover the costs of shipping and handling. Please specify diskette size (3.5 or 5.25 inch); otherwise, a 3.5 inch diskette will be shipped. Please allow a few weeks for delivery, longer for foreign deliveries. Our address is at the end of this document. ARJ INTERNET MAILING LIST New information announcements about ARJ is now available via an Internet mailing list. You can subscribe (and unsubscribe) by sending an email message to: majordomo@Dunkel.de and writing in THE BODY of the message (not in the subject): subscribe arj-info You'll be sent a message stating that you were included in the mailing list together with information, how to unsubscribe. If you just state "help" (without the quotes) in the message, you'll get more information on the available commands. ARJ WEB SUPPORT ARJ on WWW! You can reach ARJ support information at: http://www.ARJSOFT.com (ARJ homepage) http://www.Dunkel.de/ARJ (German and English) http://www.glo.be/tsf (French and English) SDN EXTENSION FILES SDN International(sm) is a FidoNet hobby organization which makes available for distribution author-direct shareware files to FidoNet capable bulletin board systems world wide. ARJ has been chosen by SDN sysops' consensus as its official compression utility. Program files distributed via SDN have a copyright ".SDN" extension. Files distributed by SDN after February 1993 can be decompressed by ARJ. Files dated earlier can be decompressed if the compression utility SDN previously used is on PATH. SDN files are security sealed with their own exclusive security seal, FSecure, created by Pacesoft. This security may be verified using the FileTest utility available at the SDN Project AuthorLine BBS 203-634-0370 or at most SDN participating BBS sites. Shareware authors wishing to distribute shareware by release through SDN may contact the same SDN Project AuthorLine BBS. DISTRIBUTORS: A list of authorized ARJ agent/distributors are found in the file AGENTS.DOC. They provide local registration and technical support for ARJ. Other distributors only provide the evaluation version of ARJ. ACKNOWLEDGEMENTS: LHARC is the name of an archiver by Haruyasu Yoshizaki. PKZIP and ZIP are trademarks of PKWare, Inc. PAK is the trademark of NoGate Consulting. I wish to express my gratitude to Haruyasu Yoshizaki (Yoshi) for developing LHARC and distributing its source code. LHARC gave me the impetus to start studying data compression. I also wish to thank Haruhiko Okumura for providing additional ideas. His AR001 and AR002 program provided the basic design for the early versions of ARJ. I also wish to thank Fabrice BELLARD for LZEXE which is used to squish the ARJ SFX modules. And my thanks also go to Paul Kocher who contributed the design of the new ARJ SECURITY envelope mechanism. I wish to thank those who have contributed significantly to the development of ARJ. Those include: Nico de Vries Frederic Taes Soeren Pingel Dalsgaard Axel Dunkel Jonathan Forbes Ron Freimuth Brian Godette Robb Hufalt Arkady Kleyner Michael Lawler Ken Levitt Eberhard Mattes Mike McCombs Alexander Pruss Joseph Teller And to the many others who have helped, provided messages of support, or provided financial support, THANKS!!! Because of you, I am able to provide FULL-TIME support to ARJ! I wish to thank my wife, Susan, and my son, Timothy, for putting up with this ARJ obsession. Their encouragement and support have been invaluable. But my greatest thanks goes to Almighty God for His inspiration and great salvation. For apart from Him, ARJ could not have been done. John 15:5 It is our prayer that this product not be used in any way to infringe or attack our freedom to worship. USAGE AND DISTRIBUTION POLICY: See LICENSE.DOC file for license policy. BRIEF BIOGRAPHY OF THE AUTHOR OF ARJ: Robert Jung grew up in Catonsville and Baltimore, Maryland. He graduated from the University of Maryland in 1970. After a short stint in the U.S. Army, he taught chemistry for six years. From teaching he entered the computer programming profession where he was employed as a programmer analyst, a network analyst, and a software engineer. In late 1990, he developed the ARJ archive format and program to meet a personal need in archiving. In February of 1991, he released ARJ 1.00 as a shareware product. The author currently supports ARJ full-time and resides in Norwood, Massachusetts with his wife Susan, and son Timothy. FINAL COMMENTS: I do hope that you find this program as useful as I have. I would appreciate any suggestions to improve this archiver. You can reach me at: Email address: robjung@world.std.com Robert Jung at FIDONET address: 1:16/390.7 Web site: http://www.ARJSOFT.com ***** UPDATED MAILING ADDRESS ***** Robert and Susan Jung ARJ Software P.O. Box 249 Norwood MA 02062 USA Fax number: 617-769-4893 *********************************** End of document