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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 -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

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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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Alternatives

There are 3 alternatives - vote for the best!

Terminal - Alternatives

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

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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.

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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

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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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Know a better way?

If you can do better, submit your command here.

What others think

As an alternative, check out http://www.pixelbeat.org/fslint/ in case you don't mind using a GUI for this. It gives you the option of hard linking the duplicate files and doing other lint-y tasks. Available as package 'fslint' at least in debian/ubuntu.

Comment by bwoodacre 49 weeks and 3 days ago