writebackup version 1.20 from 13-Apr-2012: Allow different backup dir in Bash version. writebackup version 1.13 from 03-Jun-2010: Removing execute permissions on the backup. writebackup version 1.12 from 25-Nov-2009: BUG: Checking return status of 'cp' comand. writebackup version 1.11 from 28-Apr-2009: Converted Korn shell script to Bash. writebackup version 1.10 from 11-Sep-2007: Zipping directories into a single-file backup. writebackup version 1.00 from 10-Mar-2007: First published version.
The writebackup script writes subsequent backups of the current file with a current date file extension (format .YYYYMMDD[a-z]) in the same / passed backup directory. The first backup of a day has letter 'a' appended, the next 'b', and so on. (Which means that a file can be backed up up to 26 times on any given day.)
Directories will be zipped (individually) into an archive file with date file extension. For example, a directory foo will be backed up to foo.zip.20070911a. This zip file will only contain the foo directory at its top level; foo itself will contain the entire subtree of the original foo directory (including system and hidden files).
Microsoft Windows version only so far. Requires the zip.exe command-line utility.
For Microsoft Windows, you can use the VBScript version writebackup.vbs. The shell script writebackup.sh is a Bash shell script, which can be executed on Linux or Unix systems.
C:\Temp>dir /b foo.txt C:\Temp>writebackup.vbs foo.txt C:\Temp>dir /b foo.txt foo.txt.20070315a C:\Temp>writebackup.vbs foo.txt C:\Temp>dir /b foo.txt foo.txt.20070315a foo.txt.20070315b
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License.