tldr/pages/linux/setsid.md

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# 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 --fork {{program}}`
- Return the exit code of a program as the exit code of setsid when the program exits:
`setsid --wait {{program}}`
- Run a program in a new session setting the current terminal as the controlling terminal:
`setsid --ctty {{program}}`