git-annex/doc/tips/finding_duplicate_files.mdwn

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Maybe you had a lot of files scattered around on different drives, and you
added them all into a single git-annex repository. Some of the files are
surely duplicates of others.
While git-annex stores the file contents efficiently, it would still
help in cleaning up this mess if you could find, and perhaps remove
the duplicate files.
Here's a command line that will show duplicate sets of files grouped together:
git annex find --include '*' --format='${file} ${escaped_key}\n' | \
sort -k2 | uniq --all-repeated=separate -f1 | \
sed 's/ [^ ]*$//'
Here's a command line that will remove one of each duplicate set of files:
git annex find --include '*' --format='${file} ${escaped_key}\n' | \
sort -k2 | uniq --repeated -f1 | sed 's/ [^ ]*$//' | \
xargs -d '\n' git rm
--[[Joey]]