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@ -12,4 +12,5 @@ A supplement to the [[walkthrough]].
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walkthrough/what_to_do_when_you_lose_a_repository
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walkthrough/recover_data_from_lost+found
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walkthrough/Internet_Archive_via_S3
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walkthrough/powerful_file_matching
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"""]]
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@ -14,3 +14,5 @@ thought/known to be on A.
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git annex drop --only-on A
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--[[Joey]]
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[[done]]
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36
doc/walkthrough/powerful_file_matching.mdwn
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36
doc/walkthrough/powerful_file_matching.mdwn
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@ -0,0 +1,36 @@
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git-annex has a powerful syntax for making it act on only certian files.
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The simplest thing is to exclude some files, using wild cards:
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git annex get --exclude '*.mp3' --exclude '*.ogg'
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But you can also exclude files that git-annex's [[location_tracking]]
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information indicates are present in a given repository. For example,
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if you want to populate newarchive with files, but not those already
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on oldarchive, you could do it like this:
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git annex copy --not -in oldarchive --to newarchive
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Without the --not, --in makes it act on files that *are* in the specified
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repository. So, to remove files that are on oldarchive:
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git annex drop --in oldarchive
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Or maybe you're curious which files have a lot of copies, and then
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also want to know which files have only one copy:
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git annex find --copies 7
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git annex find --not --copies 2
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The above are the simple examples of specifying what files git-annex
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should act on. But you can specify anything you can dream up by combining
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the things above, with --and --or -( and -). Those last two strange-looking
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options are parentheses, for grouping other options. You will probably
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have to escape them from your shell.
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Here are the mp3 files that are in either of two repositories, but have
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less than 3 copies:
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git annex find --not --exclude '*.mp3' --and \
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-\( --in usbdrive --or --in archive -\) --and \
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--not --copies 3
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