rdfind

Find files with duplicate content and get rid of them. More information: https://rdfind.pauldreik.se.

• Identify all duplicates in a given directory and output a summary:
  rdfind -dryrun true {{path/to/directory}}
• Replace all duplicates with hardlinks:
  rdfind -makehardlinks true {{path/to/directory}}
• Replace all duplicates with symlinks/soft links:
  rdfind -makesymlinks true {{path/to/directory}}
• Delete all duplicates and do not ignore empty files:
  rdfind -deleteduplicates true -ignoreempty false {{path/to/directory}}