# opensnoop > Tool that tracks file opens on your system. - Print all file opens as they occur: `sudo opensnoop` - Track all file opens by a process by name: `sudo opensnoop -n {{process_name}}` - Track all file opens by a process by PID: `sudo opensnoop -p {{PID}}` - Track which processes open a specified file: `sudo opensnoop -f {{path/to/file}}`