Many of the high-end "Appliance" type boxen have this feature. Usually called snapshots. You can set it up so that it keeps hourly, weekly, monthly snapshots of filesystems.
Then all you have to do is go to/some/lame/dir/.snapshot/weekly.1 and look at last weeks snapshot of/some/lame/dir
Not sure how it does it, but it has sure saved my butt on more than one occasion.
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Many of the high-end "Appliance" type boxen have this feature. Usually called snapshots. You can set it up so that it keeps hourly, weekly, monthly snapshots of filesystems. /some/lame/dir/.snapshot/weekly.1 and look at last weeks snapshot of /some/lame/dir
Then all you have to do is go to
Not sure how it does it, but it has sure saved my butt on more than one occasion.
-d