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- DHRGCD - Global Change Directory Command Version 1.01 for OS/2 2.0
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- DHRGCD - Global Change Directory Command
- Version 1.01
- for OS/2 2.0
- June 22, 1992
- Author - Dennis H. Rosenthal
-
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- Description:
- ____________
-
- The DHRGCD.CMD REXX command file implements a command line direc-
- tory change function across all accessible hard disks on your PC.
- This is similar to the Peter Norton NCD DOS command (without
- graphics) but provides a single index for all hard disks.
-
- To initialize the directory index (DIRINFO.GCD), use -
-
- DHRGCD /r [search_disk_options]
- or
- DHRGCD /rq [search_disk_options]
-
- The option /r will build the index and display all directories
- found. The option /rq will build the index without the display of
- directories (quietly). The optional search_disk_options may be
- used to override the default of all accessible hard disks known
- to OS/2. To build an index only for disks D & E enter -
-
- DHRGCD /rq DE
-
- The /r or /rq option should be used whenever directories are
- added or deleted to synchronize the index with the actual cont-
- ents of the hard disk.
-
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- To jump to another directory on the current disk or on another
- disk, just enter the directory name as the first parameter -
-
- DHRGCD dll
-
- will change to the directory ...\...DLL... found on any disk
- searched when the index was created. The search for directory
- name will only be successful if it appears as part of the last
- qualifier of a directory in whole or part. The specification of
- DLL will match
-
- \ABC\DEF\DLL1
- \ABC\123DLL
- \DLL
-
- but not
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- \DLL1\ABC
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- DHRGCD - Global Change Directory Command Version 1.01 for OS/2 2.0
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- If multiple destinations are possible, a selection list will be
- displayed -
-
- There are multiple possibilities -
- 1 \ABC\DEF\DLL1
- 2 \ABC\123DLL
- 3 \DLL
- Enter Selection Number, 0 for No Change, or Just Press Enter
- for Item 3
-
- This will be repeated until a number in the range 0 to 3 is
- entered. If an exact match is found, it will be used as the
- default for the enter key. If multiple exact matches are found,
- the last one will be the default for the enter key.
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- Directories containing spaces may also be matched by using the
- double quote (") character around the directory -
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- DHRGCD "A B C"
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- To restrict the change to the present disk, use the option
- /l
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- Example -
- DHRGCD /l DLL
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- will show directories that match DLL only on the current disk.
-
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- The index file (DIRINFO.GCD) is an ASCII CR/LF delimited file
- that may be viewed with any editor. It will contain all directo-
- ries that exist on the disks selected for indexing. The index
- will be placed in the root directory of the boot disk. The desti-
- nation may be changed if desired.
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- DHRGCD - Global Change Directory Command Version 1.01 for OS/2 2.0
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- Installation:
- _____________
-
- The file DHRRU100.DLL must be placed in a directory that is
- specified in the LIBPATH statement in your CONFIG.SYS. After OS/2
- installation the LIBPATH usually contains at least d:\OS2\DLL and
- d:\OS2\APPS\DLL (where d: is the installation drive). It may be
- placed in either of these directories or any other directory in
- the LIBPATH statement.
-
- The file DHRGCD.CMD must be placed in a directory that is speci-
- fied in the SET PATH statement in your CONFIG.SYS. After OS/2 in-
- stallation the SET PATH usually contains at least d:\OS2 and
- d:\OS2\SYSTEM (where d: is the installation drive). It may be
- placed in either of these directories or any other directory in
- the SET PATH statement.
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- The file DHRGCD.INF must be placed in a directory that is speci-
- fied in the BOOKSHELF statement in your CONFIG.SYS. After OS/2
- installation the BOOKSHELF usually contains at least d:\OS2\BOOK
- (where d: is the installation drive). It may be placed in that
- directory or in another directory by adding the other directory
- to your BOOKSHELF statement.
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- This file, DHRGCD.DOC, may be placed anywhere convenient as it is
- not referenced by DHRGCD.CMD.
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- DHRGCD - Global Change Directory Command Version 1.01 for OS/2 2.0
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- Errors:
- _______
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- When an error is detected, messages will be displayed and the CMD
- will exit with a non-zero return code. The return codes are -
-
- 4 - Help information was displayed
-
- 8 - Directory target not found in index
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- 12 - Missing parameters
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- 16 - Invalid option entered
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- 20 - Error changing to directory target - recreate index
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- 24 - No directories found on disk - index file not created
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- 28 - Index file not found - use /r to create index
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- 32 - Error finding DHRRU100 DLL
-
- 36 - Error processing DHRRU100 DLL
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- 40 - Error writing to index file
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- 44 - Unable to find a local disk for storage of index file
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- DHRGCD - Global Change Directory Command Version 1.01 for OS/2 2.0
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- Customization:
- ______________
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- The DHRGCD.CMD file is a REXX program file which contains source.
- It may be modified with any editor. At the start of the program
- are four REXX variables that control how the program operates.
- The destination of where the index file will be placed may be
- customized by two options. The default is to place the index file
- on the boot disk.
-
- The variable
- use_current_disk_index
- when set to 'Y' will place the index on the disk where the com-
- mand is executed. This will allow a separate index for each hard
- disk. The CMD file is delivered with this set to 'N'.
-
- If use_current_disk_index is not set to 'Y', the variable
- use_boot_disk_index
- when set to 'Y' will place the index on the boot disk. If
- use_current_disk_index is not 'Y' and use_boot_disk_index is also
- not 'Y', the index will be placed on the first local hard disk.
- The CMD file is delivered with this set to 'Y'. This option is
- provided to allow the containment of all OS/2 files on a single
- disk. This CMD was developed on a PC where disk C is a DOS 5 -
- OS/2 1.3 dual boot primary partition, disk D is an OS/2 FAT
- bootable logical partition, and disk I is an OS/2 HPFS bootable
- logical partition on a second physical disk. DHRGCD.CMD will
- search disk D for the index file when booted from disk D and
- search disk I when booted from disk I.
-
- The DHRGCD.CMD file will use the ANSI.SYS control strings to
- adjust display colors. One consequence is that the current colors
- cannot be saved. If changed by the CMD the display will be left
- with a white foreground on a black background. If this is not
- desirable, the use of ANSI control strings may be eliminated by
- setting the variable
- use_ansi_colors
- to 'N'. Or the default exit value (ansi_white) may be changed to
- match the colors you are currently using.
-
- The default disks to be indexed are the combination of local hard
- disks and remote disks known to OS/2 at the time the index re-
- quest is processed. To index only local hard disks, set the value
- of variable
- use_all_disks
- to 'N'.
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- DHRGCD - Global Change Directory Command Version 1.01 for OS/2 2.0
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- The CMD file may be renamed. One suggestion is to rename
- DHRGCD.CMD to GCD.CMD and create a second CMD file called CCD.CMD
- (Current disk Change Directory) that invokes GCD.CMD with the
- '/l' parameter. This would provide global access with GCD and
- current disk only access with CCD. Example -
-
- /* This is a REXX exec */
- parse arg dest
- if left(dest,1) = '/' then do
- say 'Invalid Destination ('dest') - use DHRGCD for options'
- exit 16
- end
- call 'GCD' '/l' dest
- exit result
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- DHRGCD - Global Change Directory Command Version 1.01 for OS/2 2.0
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- Disclaimer:
- ___________
-
- DHRGCD.CMD and DHRRU100.DLL are distributed as is, with no guar-
- antee that they will work correctly in all situations. In no
- event will the Author be liable for any damages whatsoever,
- including, without limitation, loss of profit, loss of informa-
- tion, or special, incidental, or consequential damages or other
- similar claims, arising out of the use of or inability to use
- these files, even if the Author has been advised of the possibil-
- ity of such damages, or for any claim by any other party.
-
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- Copyright:
- __________
-
- The files DHRGCD.CMD and DHRRU100.DLL are placed in the public
- domain with the restriction that some parts may have previously
- been copyrighted by others. You may use, redistribute, or modify
- these files without restriction by the Author.
-
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- Modifications:
- ______________
-
- Since this is a REXX command file, the source is available for
- modification by anyone. I would appreciate notification of any
- major modifications or corrections so they may be reviewed for
- inclusion in future versions (if any).
-
- I may be reached via CompuServe ID 75176,3003.
-
- Dennis H. Rosenthal
- June 22, 1992
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- DHRGCD - Global Change Directory Command Version 1.01 for OS/2 2.0
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- DHRRU100 DLL Notes:
- ___________________
-
- To determine the OS/2 boot disk, a REXX callable DLL was created
- based on the REXXUTIL DLL. It has a single function that returns
- the information from the OS/2 2.0 DosQuerySysInfo request. The
- DHRGCD.CMD only uses one variable, stem.5, which contains the
- boot disk number. A total of 23 variables will be returned along
- with descriptions. Example (reminder - '/*' must begin in column
- 1 on first line of cmd file to invoke REXX processing) -
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- /* This is a REXX exec */
- /*
- ** Use RxFuncAdd to identify the DLL and register an entry point
- */
- if RxFuncQuery('DHRSysInfo') then
- call RxFuncAdd 'DHRSysInfo','DHRRU100','DHRSysInfo'
- call DHRSysInfo 'infoval', 'infodesc'
- /* On return, RESULT will contain "0" or > "0" */
- if result > 0 then do
- say 'Error in DHRSysInfo, rc =' result
- exit result
- end
- /* infoval.0 contains the count of variables returned */
- say 'Count of variables returned =' infoval.0
- do varnum = 1 to infoval.0
- say left(infodesc.varnum,30) infoval.varnum
- end
- exit
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- The call to DHRSysInfo requires one REXX stem variable name and
- optionally a second REXX stem variable name. The variable stem.0
- will contain the count of data item returned in stem.1 through
- stem.n. The first variable name is used to return values. The
- second variable name, if supplied, is used to return descriptions
- for the values in the first variable. A result code of 0 indi-
- cates that the function executed correctly. A result code greater
- than zero will indicate a problem with extracting the information
- or storing the information in a REXX variable. An error message
- will be displayed with more specific information. A parameter
- error will produce a severe REXX error and terminate the CMD
- file.
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