Start a backup, if one is not running already, and release control of the shell

tmutil

  • Utility for managing Time Machine backups. Most verbs require root privileges.
    More information: <https://ss64.com/osx/tmutil.html>.
  • Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

sudo tmutil startbackup

click the source code to copy