Pre-launch#
To keep a process running after logout, run it with nohup.
$ nohup some_command &
Post-launch#
Bash#
If you have already launched the process, and are using bash, you can run:
$ disown -h <jobspec>
Example#
When in a terminal with a running process type ^z to put in the background. Then type
$ bg $ disown -h
Linux.Shell - Mac.Shell