The following steps allow you to send a process to background:

Run a very long command, e.g.:
sleep 5000

Detach from it by pressing: ctrl-Z

List the current jobs:
jobs

Send job 1 to background:
bg 1

If you want to close the terminal session, disown job 1 such that it can continue even if your terminal session is closed:
disown -h %1

 

admin / Dec 09, 2020