fdupes

Finds duplicate files in a given set of directories. More information: https://github.com/adrianlopezroche/fdupes.

• Search a single directory:
  fdupes {{path/to/directory}}
• Search multiple directories:
  fdupes {{directory1}} {{directory2}}
• Search a directory recursively:
  fdupes -r {{path/to/directory}}
• Search multiple directories, one recursively:
  fdupes {{directory1}} -R {{directory2}}
• Search recursively and replace duplicates with hardlinks:
  fdupes -rH {{path/to/directory}}
• Search recursively for duplicates and display interactive prompt to pick which ones to keep, deleting the others:
  fdupes -rd {{path/to/directory}}
• Search recursively and delete duplicates without prompting:
  fdupes -rdN {{path/to/directory}}