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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)
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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.
If you can do better, submit your command here.
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