Utility for managing Time Machine backups. Most verbs require root privileges. More information: https://ss64.com/osx/tmutil.html.
sudo tmutil setdestination {{path/to/disk_mount_point}}
sudo tmutil setdestination {{protocol://user[:password]@host/share}}
sudo tmutil setdestination -a {{destination}}
sudo tmutil enable
sudo tmutil disable
sudo tmutil startbackup
sudo tmutil startbackup -b
sudo tmutil stopbackup