Ultra Fast Duplicate Files Finder
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  original by Gautier Portet <kassoulet gmail com>
  modified by schoetbi

Example use:

  ./UltraFastDuplicateFilesFinder.py <folder>

Options:
   -d dir     If duplicate files are found in this directory delete the file
              if it is not the only one
   --dry      Do not delete anything. Just try it out
   --min-size Minimal file size to process