disown
ShellPackage: bash
Detaches a job from the shell that started it, so it survives the terminal closing. A rescue, not a method: a service that has to run needs a systemd unit.
What its options do in the lessons
From the same glossary the lessons render under their commands, so the two cannot disagree.
disown -h- Does not remove the job from the list, but shields it from the SIGHUP sent when the terminal closes. Without
-h,disownremoves it from the shell entirely.