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'data' is the directory to backup, 'backup' is directory to store snapshots.
Backup files on a regular basis using hard links. Very efficient, quick. Backup data is directly available.
Same as explained here :
in one line.
Using du to check the size of your backups, the first backup counts for all the space, and other backups only files that have changed.
There are 2 alternatives - vote for the best!
Creates files in $DATE and hardlinks existing files to $PREVDATE. Thus full backup in each directory. Only drawback is changed modification time. Recommend a wrapper script to determine $DATE and $PREVDATE. Works like a charm. (Dirvish handrolled)
If you can do better, submit your command here.
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