# pacdiff > Maintenance utility for `.pacorig`, `.pacnew` and `.pacsave` files created by `pacman`. > More information: . - Review files that need maintenance in interactive mode: `pacdiff` - Use sudo and sudoedit to remove and merge files: `pacdiff --sudo` - Review files needing maintenance, creating `.bak`ups of the original if you `(O)verwrite`: `pacdiff --sudo --backup` - Use a specific editor to view and merge configuration files (default is `vim -d`): `DIFFPROG={{editor}} pacdiff` - Scan for configuration files with `locate` instead of using `pacman` database: `pacdiff --locate` - Display help: `pacdiff --help`