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MOTIVATION, DETAILED DESCRIPTION, AND BACKGROUND

ZBACKUP is a simple aid to help you fulfill your responsibility to
yourself by backing up not all DOS files, but rather ones that you
have what you feel is significant investment in and which couldn't
be re-installed in the event of a fixed disk disaster. In general it
is recommended that you make at least one formal full DOS Backup of
your entire fixed disk, probably using the DOS Backup command.
Whether or not you do this, ZBACKUP is a utility that you may wish
to run either weekly or daily, depending on how much you use your
PC.

The disadvantage of ZBACKUP is that YOU must keep the index
ZBACKUP.INX up to date and YOU must know WHICH files in a package
(e.g., like DBASE III, EXCEL, WordPerfect, etc.) that are not
"re-installable". The advantage is that in many cases all such files
that you have significant time investment in on a typical 100M fixed
disk system will Zbackup in 2 or 3 minutes to one or two (1.44M)
diskettes. You may wish to rotate two or three sets of Zbackup
diskettes both to insure better integrity and in some cases to
retrieve files that were inadvertently changed and then backed up
once (but not to all sets of Zbackup diskettes).

ZBACKUP.BAT is simple tool that does two actions: (1) uses Phil
Katz's PKZIP to compress a SELECTED index of filespecs in the file
C:\ZBACKUP.INX; and (2) then back up the compressed result to
diskette using the DOS BACKUP command. ZBACKUP calls no other
programs other than PKZIP and DOS's BACKUP command. To restore files
requires DOS RESTORE and PKUNZIP. The DOS BACKUP is to drive A:
unless you edit ZBACKUP.BAT and change that. As it turns out, DOS
Version 4.0 and above BACKUP command doesn't change the file
C:\ZBACKUP.ZIP (except for splitting it across diskette if it
happens not to fit on the one diskette). Thus you can add up the
sizes of the DOS Backup piece(s) and this will equal the size in
bytes of C:\ZBACKUP.ZIP. Likewise if C:\ZBACKUP.ZIP fits on one
diskette (often the case), after DOS Backup you can issue: PKUNZIP
-v A:\BACKUP.001 to view its contents, just as you'd do for a
regular Zip file. If C:\ZBACKUP.ZIP is not erased between ZBACKUP
commands, files there will be "updated" (or added if you add
filespecs to C:\ZBACKUP.INX). One enhancement you may wish to add is
to invoke your favorite editor on the file ZBACKUP.INX just before
PKZIP is called in ZBACKUP.BAT. Another would be to use invoke your
favorite editor to display this Help file; e.g., EDIT C:\ZBACKUP.HLP
HDK - 10/6/92.

   ---------------------Example of ZBACKUP.INX follows-------------------
C:\KEDIT\*.KEX
C:\KEDIT\*.KML
C:\BATCH\*.*
C:\UTIL\*.*
C:\REXX\*.REX
C:\WATFOR77\*.FOR
C:\WATFOR77\*.DAT
C:\CONFIG.SYS
C:\AUTOEXEC.BAT
C:\DOS\*.INI
C:\DOS\*.BAT
C:\ZBACKUP.INX
D:\DATA\*.


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