fdupes
Find duplicate files in a set of directories. tldr-pages
On several platforms
Several platforms
Search a single directory
fdupes path/to/directoryIdentifySearch multiple directories
fdupes path/to/directory1 path/to/directory2 ...IdentifySearch a directory recursively
fdupes --recurse path/to/directoryIdentifySearch multiple directories, one recursively
fdupes path/to/directory1 --recurse: path/to/directory2IdentifySearch recursively, considering hardlinks as duplicates
fdupes --recurse --hardlinks path/to/directoryIdentifySearch recursively for duplicates and display interactive prompt to pick which ones to keep, deleting the others
fdupes --recurse --delete path/to/directoryIdentifySearch recursively and delete duplicates without prompting
fdupes --recurse --delete --noprompt path/to/directoryIdentify