git-annex/doc/tips/automatically_adding_metadata.mdwn

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git-annex (5.20140402) unstable; urgency=medium * unannex, uninit: Avoid committing after every file is unannexed, for massive speedup. * --notify-finish switch will cause desktop notifications after each file upload/download/drop completes (using the dbus Desktop Notifications Specification) * --notify-start switch will show desktop notifications when each file upload/download starts. * webapp: Automatically install Nautilus integration scripts to get and drop files. * tahoe: Pass -d parameter before subcommand; putting it after the subcommand no longer works with tahoe-lafs version 1.10. (Thanks, Alberto Berti) * forget --drop-dead: Avoid removing the dead remote from the trust.log, so that if git remotes for it still exist anywhere, git annex info will still know it's dead and not show it. * git-annex-shell: Make configlist automatically initialize a remote git repository, as long as a git-annex branch has been pushed to it, to simplify setup of remote git repositories, including via gitolite. * add --include-dotfiles: New option, perhaps useful for backups. * Version 5.20140227 broke creation of glacier repositories, not including the datacenter and vault in their configuration. This bug is fixed, but glacier repositories set up with the broken version of git-annex need to have the datacenter and vault set in order to be usable. This can be done using git annex enableremote to add the missing settings. For details, see http://git-annex.branchable.com/bugs/problems_with_glacier/ * Added required content configuration. * assistant: Improve ssh authorized keys line generated in local pairing or for a remote ssh server to set environment variables in an alternative way that works with the non-POSIX fish shell, as well as POSIX shells. # imported from the archive
2014-04-02 20:42:53 +00:00
git-annex's [[metadata]] works best when files have a lot of useful
metadata attached to them.
To make git-annex automatically set the year and month when adding files,
run `git config annex.genmetadata true`.
A git commit hook can be set up to extract lots of metadata from files
like photos, mp3s, etc.
1. Install the `extract` utility, from <http://www.gnu.org/software/libextractor/>
`apt-get install extract`
2. Download [[pre-commit-annex]] and install it in your git-annex repository
as `.git/hooks/pre-commit-annex`.
Remember to make the script executable!
3. Run: `git config metadata.extract "artist album title camera_make video_dimensions"`
Now any fields you list in metadata.extract to will be extracted and
stored when files are committed.
To get a list of all possible fields, run: `extract -L | sed 's/ /_/g'`
By default, if a git-annex already has a metadata field for a file,
its value will not be overwritten with metadata taken from files.
To allow overwriting, run: `git config metadata.overwrite true`