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DELETE all those duplicate files but one based on md5 hash comparision in the current directory tree

Terminal - DELETE all those duplicate files but one based on md5 hash comparision in the current directory tree
find . -type f -print0|xargs -0 md5sum|sort|perl -ne 'chomp;$ph=$h;($h,$f)=split(/\s+/,$_,2);print "$f"."\x00" if ($h eq $ph)'|xargs -0 rm -v --
2009-06-07 03:14:06
Functions: find perl rm xargs
19
DELETE all those duplicate files but one based on md5 hash comparision in the current directory tree

This one-liner will the *delete* without any further confirmation all 100% duplicates but one based on their md5 hash in the current directory tree (i.e including files in its subdirectories).

Good for cleaning up collections of mp3 files or pictures of your dog|cat|kids|wife being present in gazillion incarnations on hd.

md5sum can be substituted with sha1sum without problems.

The actual filename is not taken into account-just the hash is used.

Whatever sort thinks is the first filename is kept.

It is assumed that the filename does not contain 0x00.

As per the good suggestion in the first comment, this one does a hard link instead:

find . -xdev -type f -print0 | xargs -0 md5sum | sort | perl -ne 'chomp; $ph=$h; ($h,$f)=split(/\s+/,$_,2); if ($h ne $ph) { $k = $f; } else { unlink($f); link($k, $f); }'

Alternatives

There are 3 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

Very cute.

Alternatively, if you want to keep the appearance but still save space, you can use the "hardlink" command. This searches recursively for duplicates and replaces them all with hard links.

Comment by flatcap 381 weeks and 1 day ago

fdupes its just simple! If you just want one of the files type:

fdupes -fN
Comment by debuti 381 weeks ago

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Comment by xiaozhengm 34 weeks and 6 days ago

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