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Back up key files via rsync and ssh
Authored by: BobHarris on Jul 01, '08 07:11:07PM
If you use rsnapshot, you can have something that is similar to Time Machine. rsnapshot is a Perl script that uses rsync --link-dest=/previous/backup/directory/tree where rsync will create hardlinks to the previous backup if the file is unchanged. This way each backup looks like it is a full backup, but each backup only consumes the space needed for the new/modified files. And since hardlinks are used, you can delete any backup and not affect any other snapshot before or after.
<http://www.rsnapshot.org/>;
<http://www.rsnapshot.org/howto/1.2/rsnapshot-HOWTO.en.html>;

While rsync is not perfect it does allow me to securely (over ssh) backup my Mom's iMac across the internet, and have multiple generations of backup, similar to Time Machine. Then again, I only try to backup Mom's iMac once a day, not every hour :-)

So if you are going to invest your time into an rsync solution, you should take a look at rsnapshot.

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