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Find Duplicate Files (based on size first, then MD5 hash)

Terminal - Find Duplicate Files (based on size first, then MD5 hash)
find . -type f -size +0 -printf "%-25s%p\n" | sort -n | uniq -D -w 25 | sed 's/^\w* *\(.*\)/md5sum "\1"/' | sh | sort | uniq -w32 --all-repeated=separate
2013-02-23 20:44:20
User: jimetc
Functions: find sed sh sort uniq
0
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Find Duplicate Files (based on size first, then MD5 hash)

Avoids the nested 'find' commands but doesn't seem to run any faster than syssyphus's solution.

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Alternatives

There are 8 alternatives - vote for the best!

Terminal - Alternatives
find -not -empty -type f -printf "%s\n" | sort -rn | uniq -d | xargs -I{} -n1 find -type f -size {}c -print0 | xargs -0 md5sum | sort | uniq -w32 --all-repeated=separate
2009-09-21 00:24:14
User: syssyphus
Functions: find md5sum sort uniq xargs
42
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Find Duplicate Files (based on size first, then MD5 hash)

This dup finder saves time by comparing size first, then md5sum, it doesn't delete anything, just lists them.

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find -type f -exec md5sum '{}' ';' | sort | uniq --all-repeated=separate -w 33 | cut -c 35-
2009-08-04 07:05:12
User: infinull
Functions: cut find md5sum sort uniq
17
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Find Duplicate Files (based on MD5 hash)

Calculates md5 sum of files. sort (required for uniq to work). uniq based on only the hash. use cut ro remove the hash from the result.

Comments (1) | Add to favourites | Report as malicious
fdupes -r .
2011-02-19 17:02:30
User: Vilemirth
Tags: xargs parallel
9
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Find Duplicate Files (based on size first, then MD5 hash)

If you have the fdupes command, you'll save a lot of typing. It can do recursive searches (-r,-R) and it allows you to interactively select which of the duplicate files found you wish to keep or delete.

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find -type d -name ".svn" -prune -o -not -empty -type f -printf "%s\n" | sort -rn | uniq -d | xargs -I{} -n1 find -type d -name ".svn" -prune -o -type f -size {}c -print0 | xargs -0 md5sum | sort | uniq -w32 --all-repeated=separate
2010-01-28 09:45:29
User: 2chg
Functions: find md5sum sort uniq xargs
Tags: find duplicate files md5sum VCS subversion
0
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Find Duplicate Files, excluding .svn-directories (based on size first, then MD5 hash)

Improvement of the command "Find Duplicate Files (based on size first, then MD5 hash)" when searching for duplicate files in a directory containing a subversion working copy. This way the (multiple dupicates) in the meta-information directories are ignored.

Can easily be adopted for other VCS as well. For CVS i.e. change ".svn" into ".csv":

find -type d -name ".csv" -prune -o -not -empty -type f -printf "%s\n" | sort -rn | uniq -d | xargs -I{} -n1 find -type d -name ".csv" -prune -o -type f -size {}c -print0 | xargs -0 md5sum | sort | uniq -w32 --all-repeated=separate
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find -not -empty -type f -printf "%s\n" | sort | uniq -d | parallel find -type f -size {}c | parallel md5sum | sort | uniq -w32 --all-repeated=separate
2010-01-28 08:40:18
User: unixmonkey8046
Functions: find md5sum sort uniq
Tags: xargs parallel
-1
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Find Duplicate Files (based on size first, then MD5 hash)

A bit shorter and parallelized. Depending on the speed of your cpu and your disk this may run faster.

Parallel is from https://savannah.nongnu.org/projects/parallel/

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