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- - Page 1
- LUU - Library Update Utility
- Version 2.13 - April 28, 1986
- (c) Vernon D. Buerg 1986
-
-
- LUU Command
- -----------
-
- Purpose: To place one or more files into a single library (LBR)
- file for archiving, data transmission or back-up.
-
- Format: LUU [d:][path]filename[.LBR] filespec(s) /N /Q /D /nnn
-
- Remarks: The library name and at least one input member file name
- must be supplied. The library name may contain a drive,
- path names, and a filename with an extension. If the
- library extension is omitted, .LBR is assumed.
-
- There may be one or more member file names. Separate each
- member name by one blank. Each member name may include a
- drive, path names, and wildcard characters in the file
- name and extension.
-
- Files larger than 1024 bytes are automatically sQueezed
- using the Greenlaw/Huffman algorithm. You may use the /N
- option to negate sQueezing. If the squeezed file is larger
- than the original file, an extra step is taken to place
- the smaller original file into the library. You may use
- the /Q option to bypass this step and put the squeezed
- version of the file into the library.
-
- The input files may be deleted (after being placed into
- the library file) by using the /D option.
-
- If the LBR file does not exist, you are prompted to enter
- a number for the size of the library directory. You may
- use the /nnn option to supply this number and avoid the
- prompt.
-
- The DOS error level is set to 1 if LUU terminates with an
- error.
-
- Notes: Written for the IBM PC using DOS 2.0 through DOS 3.1.
- For private, personal use. Commercial use prohibited.
-
- Copyright (c) 1985 by Vernon Buerg. All rights reserved.
- 456 Lakeshire Drive
- Daly City, CA 94015
- RBBS: 415-994-2944
- CompuServe: 70007,1212
-
- LUU duplicates the A(dd) and U(pdate) functions of LU.
- When used with LUT and LUE, original file dates are
- preserved and recorded.
-
- The advantages of LUU are:
- o smaller, so a copy can be kept on the "system" disk
- o faster, mucho
- o handles paths and wildcards
- o retains input file (or member) date/time
- o replaces in-place to save disk space
- o automatically squeezes files to save disk space
- -
- LUU - Library Update Utility
-
- Command Options
- ---------------
-
- /N indicates do Not squeeze the files, place the original
- files, as-is, into the library
-
- /Q indicates that the sQueezed version of the files be
- placed into the library whether they are larger than
- the original version or not
-
- /D indicates that the original files be deleted after
- being added to the library
-
- /nnn supplies the number of directory to allocate to a
- new library, thus bypassing the prompt. A value of
- 1 to 255 may be used.
-
- All command options must be entered after any filename
- parameters. That is, at the end of the command line.
-
- The defaults result in squeezing any file that is larger than
- 1024 bytes, and placing the squeezed version of the file into
- the library only if it is smaller than the original file.
-
-
- Examples
- --------
-
- o Place all files on drive B which have an extension
- of "AQM" into the file called "AQM.LBR":
-
- LUU a:AQM.LBR b:*.AQM
-
-
- o Place all files on drive B which have a filename
- of PCT366 into the file PCT366.LBR and do not sQueeze
- them:
-
- LUU PCT366 b:PCT366.* /N
-
-
- o Place all files from drive B which match the file
- specification "AB??XX.???", and all files from the
- the directory "PROD" on drive A which have an extension
- of "ASC" into the file "SOURCE.LBR" in the directory
- called "TEST" on drive C:
-
- LUU c:\test\source.lbr b:ab??xx.* a:\prod\*.asc
-
-
- o Place all files from the current drive into a new
- library called "TEST.LBR", and allocate 32 directory
- entries if the library does not exist:
-
- LUU test *.* /32
-
- -
- LUU - Library Update Utility
-
- File Formats
- ------------
-
- An LBR file consists of a directory and one or more
- "members". The directory contains from 4 to 256 entries.
- Each entry is 32 bytes long and describes a member, if
- one exists.
-
- The first directory entry describes the directory
- itself. Thus, the number of entries allocated is increased
- by one.
-
- All space allocation is in terms of sectors. Each
- sector is 128 bytes long. Four directory entries fit
- in one sector, so the directory is allocated in multiples
- of four.
-
- There are three directory formats recognized by LUU.
- They are: 1) old LU, 2) LUPC, and 3) new LU86. When a new
- library is created, LUU uses the new LU86 directory format.
- If LUU is updating an existing LBR file, it uses the same
- format that the file was created with.
-
- Directory format
- ----------------
- 0 - File status; 0=active, 254=deleted, 255=free
- 1 - Member name; filename in FCB format, dir name is blanks
- 12 - Offset to data in sectors of 128 bytes
- 14 - Length of member in sectors.
- 16 - all zero for 'old LU' format
-
- LUPC format extension
- ---------------------
- 1 - master directory name is ********DIR
- 16 - Original member file creation date, MM/DD/YY
- 24 - Original member file creation time, HH:MM:SS
-
- LU86 Directory Format
- ---------------------
-
- 0 - File status; 0=active, 254=deleted, 255=free
- 1 - Member name; filename in FCB format, dir name is blanks
- 12 - Offset to data in sectors of 128 bytes
- 14 - Length of member in sectors.
- 16 - CRC word, or zero if Cyclic Redundancy Checking not used
- 18 - File create date, CP/M format
- 20 - File create time, DOS format
- 22 - Date file last updated (replaced), CP/M format
- 24 - Time file last updated, DOS format
- 26 - Number of bytes in last sector
- 27 - reserved/unused/zero
-
-
- The date and time stamp fields vary in format. LUU uses
- the LU86 format when it creates a library. Otherwise, the
- format used when the library was created is used.
-
- The member name for the directory entry is all blanks.
- This allows for compatibility checking between versions
- of LU and LUU.
- -
- Page 4
- LUU - Library Update Utility
-
-
-
- Version History
- ---------------
-
- 1.2, July 30, 1984.
- 1.3, August 6, 1984.
- - Ignore CRC bytes in directory.
- - Update in place if replacement member is same size
- or smaller, of is last member in directory.
-
- 1.4, August 13, 1984.
- - recognize new CPM date/time stamp format
-
- 1.5, December 21, 1984,
- - allow multiple member names to be specified
-
- 1.6, January 23, 1984,
- - default to LU86 directory format
-
- 1.65, April 13, 1985,
- - set ERRORLEVEL to 1 if any errors
- - use DOS functions for displaying messages to allow
- for redirection, etc.
-
- 1.66, May 14, 1985,
- - correct CP/M dates from LU86 formats
-
- 1.67, June 17, 1985,
- - correct MAJOR problem "Updating" the last file,
- would result in damage to other files.
-
- 2.00, June 26, 1985
- - add CRC for LBR files
- - add CRC for directory
- - re-use deleted entries
-
- 2.05, July 13, 1985
- - automatically sQueeze files larger than 1024 bytes
- - add /N option to suppress sQueezing
-
- 2.08, December 29, 1985
- - add the /nnn option to supply the number of directory
- entries for new library files
- - add /D option to delete input files
-
- - use smaller of original file or squeezed file
- - add /Q option to use sQueezed file regardless of size
-
- - correct directory update problem if "File not found"
- error occurs
- - implement CRC for squeezed files
-
- 2.09, January 27, 1986
- - correct losing directory if run out of directory entries,
- or any other error
-
- 2.13, April 28, 1986
- - correct replacement of members that were automatically
- squeezed
-
-