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- From: Sheldon.Sawatzky@f886.n2000.z12.misgate.gmi.org (Sheldon Sawatzky)
- Sender: uucp@misgate.gmi.org
- Path: sparky!uunet!cs.utexas.edu!sdd.hp.com!col.hp.com!gmi!misgate!uucp
- Newsgroups: comp.sys.ibm.pc.misc
- Subject: Compress Huge File 3/3
- Message-ID: <724113082.F00006@misgate.gmi.org>
- Date: Thu, 10 Dec 1992 13:48:04 -0700
- Lines: 67
-
- Part 3/3
-
- 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\*.
-
-
- * OLX 2.1 TD * May peace and joy be yours this holiday season!
-
- * Origin: Taiwan Missionary BBS (12:2000/886.0)
-
-