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Incremental Backup Tool
Entry Nr. 345, by user 1
A shellscript that makes marvelous incremental backups

Usage: ge_backup.sh /some/folder/ my_backup

#!/bin/bash if [ $# -ne 2 ] then echo echo "incremental backup" echo "usage: ge_backup.sh " echo "example: ge_backup.sh /some/where/data/ backup" echo exit 1 fi rsync --delete \ -avu \ --backup \ --backup-dir=$(pwd)/$2.history/$(date +%Y-%m-%d-%H-%M-%S) \ $1 \ $2 \ | tee -a $2.log

Characteristics of the backups:

2 Backupfolders:

data
data.history

You can rewind the contents of data by performing these 2 actions for every history-point:

1) Delete all files younger (linux command stat) then the history point
2) Copy all files from the history point back to the data folder

Known alternatives:


rdiff-backup - This is the way to go!
rdiff-backup does incremental backups not only on a file basis, but also on an "in file" basis that even works with binary files. So it keeps the history of each file in a very efficient way. It also has nice tools compare, recreate etc.

git - The version control system
Might be worth a try. But at the moment git doesnt track empty directories (see http://kerneltrap.org/mailarchive/git/2007/7/17/251902)