nohup

Run a command immune to hangups

TLDR

Run command immune to hangups

$ nohup [command] &

Run with output to file

$ nohup [command] > [output.log] 2>&1 &

Run script in background

$ nohup [./script.sh] &

Run with custom output

$ nohup [command] > [custom.out] &

SYNOPSIS

nohup command [arguments]nohup option

nohup runs command while ignoring the SIGHUP signal, so the process keeps running after the controlling terminal is closed or the user logs out.If standard output is a terminal, it is appended to nohup.out in the current directory, or to $HOME/nohup.out if that is not writable. If standard error is a terminal, it is redirected to standard output. If standard input is a terminal, it is redirected from an unreadable file.Note: nohup does not itself put the process in the background; combine with & (or a shell job-control facility) to detach.

PARAMETERS

COMMAND

Command to run.

ARGUMENTS

Command arguments.

--help

Display help information.

--version

Output version information.

EXIT STATUS

125 nohup itself failed. 126 command found but could not be invoked. 127 command not found. Otherwise the exit status of command.

CAVEATS

Combine with & to run in the background. Output is appended (not overwritten) to nohup.out. Many shells provide a built-in nohup that may differ from the GNU coreutils version. To fully detach a process from the shell, consider disown or setsid.

HISTORY

nohup is a classic Unix command for running processes that survive terminal disconnection.