nohup - run a command immune to hangups, with output to a non-tty

Options you will use

--help

display this help and exit

--version

output version information and exit

Examples

$ nohup ./long-job.sh &

keep running after the terminal hangs up; output goes to ./nohup.out

$ nohup ./long-job.sh > job.log 2>&1 &

choose where the output goes instead of nohup.out

Gotchas

• If standard input is a terminal, redirect it from an unreadable file. If standard output is a terminal, append output to 'nohup.out' if possible, '$HOME/nohup.out' otherwise. If standard error is a terminal, redirect it to standard output.
• nohup only makes the command ignore SIGHUP. It does not put it in its own session, and SIGTERM or SIGKILL still end it. For anything that matters, run it as a unit: systemd-run --unit=NAME COMMAND.

Taught in

• 3.10 Sessions, SIGHUP, and surviving a disconnect