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

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
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/

0
2010-01-28 08:40:18

9 Alternatives + Submit Alt

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


    73
    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
    syssyphus · 2009-09-21 00:24:14 23
  • 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.


    22
    fdupes -r .
    Vilemirth · 2011-02-19 17:02:30 0
  • 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.


    18
    find -type f -exec md5sum '{}' ';' | sort | uniq --all-repeated=separate -w 33 | cut -c 35-
    infinull · 2009-08-04 07:05:12 1
  • 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 Show Sample Output


    2
    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
    2chg · 2010-01-28 09:45:29 0
  • This works on Mac OS X using the `md5` command instead of `md5sum`, which works similarly, but has a different output format. Note that this only prints the name of the duplicates, not the original file. This is handy because you can add `| xargs rm` to the end of the command to delete all the duplicates while leaving the original.


    2
    find . -type f -exec md5 '{}' ';' | sort | uniq -f 3 -d | sed -e "s/.*(\(.*\)).*/\1/"
    noahspurrier · 2012-01-14 08:54:12 4

What Others Think

Quite impressive. My hat is off to you.
linuxrawkstar · 438 weeks ago

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