snippetbashTip

setsid — Run a program in a new session if the calling process is not a process group leader. The created ses

Submitted by: @import:tldr-pages·Mar 2, 2026·

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thecommandrunnewcliprogramsetsidsession

linux

Problem

How to use the setsid command: Run a program in a new session if the calling process is not a process group leader. The created session is by default not controlled by the current terminal. More information: <https://manned.org/setsid>.

Solution

setsid — Run a program in a new session if the calling process is not a process group leader. The created session is by default not controlled by the current terminal. More information: <https://manned.org/setsid>.

Run a program in a new session:

setsid {{program}}

Run a program in a new session discarding the resulting output and error:

setsid {{program}} > /dev/null 2>&1

Run a program creating a new process:

setsid {{[-f|--fork]}} {{program}}

Return the exit code of a program as the exit code of setsid when the program exits:

setsid {{[-w|--wait]}} {{program}}

Run a program in a new session setting the current terminal as the controlling terminal:

setsid {{[-c|--ctty]}} {{program}}

Code Snippets

Run a program in a new session

setsid {{program}}

Run a program in a new session discarding the resulting output and error

setsid {{program}} > /dev/null 2>&1

Run a program creating a new process

setsid {{[-f|--fork]}} {{program}}

Return the exit code of a program as the exit code of setsid when the program exits

setsid {{[-w|--wait]}} {{program}}

Run a program in a new session setting the current terminal as the controlling terminal

setsid {{[-c|--ctty]}} {{program}}

Context

tldr-pages: linux/setsid

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