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10.5: How to delete objects from Time Machine backups
Authored by: lar3ry on Nov 14, '07 10:23:47AM
Aside from some of the more nefarious things a White House staffer may want to remove, there are some pretty good reasons to remove all instances of a file/files:
  • A file has moved (via "copy" and "delete"). It would be rather great if TM could detect via file size + checksum that a file has moved, and simply maintain a pointer to the moved file to prevent the same contents taking up twice as much (or more) backup space. Great, but a lot of extra work. [smile]
  • A file is simply "append-only" like a system log file (such a file should be excluded from TM backups, but you may not realize it before you've started).
  • I, for one, don't want my web cookies or security details backed up indiscriminately. I'd prefer to say when and where such sensitive data will be stored. For a corporate user, there could be many more sensitive things that should not be backed up just because they're there.
  • A file is ALREADY a backup of something from somewhere else (like my bi-weekly backup of my GMail messages). Why have TM backup a backup?
This isn't meant to be exhaustive, but illuminative...

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