Exemplo:
% diff "/Volumes/New Volume/4kyoutube/" "/Volumes/New Volume/tmpmusic"| grep Distortion
Only in /Volumes/New Volume/tmpmusic: ZAC & Bäkka - Distortion (Original Mix) [Sprout].mp3
Only in /Volumes/New Volume/4kyoutube/: ZAC & Bäkka - Distortion (Original Mix) [Sprout].mp3
% diff "/Volumes/New Volume/tmpmusic/ZAC & Bäkka - Distortion (Original Mix) [Sprout].mp3" "/Volumes/New Volume/4kyoutube/ZAC & Bäkka - Distortion (Original Mix) [Sprout].mp3"
%
O que posso fazer sobre isso? Os arquivos são idênticos.