Duplicate files

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DeltaWalker

File and Folder Comparison and Synchronization: https://www.deltawalker.com/

install fdupes on mac

brew install fdupes

find duplicates

fdupes .

find and delete duplicates

preserve the first file in each set of duplicates and delete the rest without prompting the user

fdupes -dN .

recursive:

fdupes -dNr .

dupeGuru Picture Edition

This great tool finds duplicate images based on content.