nohup find dump_events/* -type f -name "*.jpg" -exec bash -c "cp -v {} \"backup_events/\`ls {} --full-time --time-style="+%Y-%m-%d_%H-%M-%S" | cut -d ' ' -f 6 \`_\`md5sum {} | cut -d ' ' -f 1\`.jpg\";" \; & Let's do this... I may also add this... And this... And that... And the other thing there... Then calculate how flat the earth is... But in one line!