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setsid command in Linux with Examples
  • Last Updated : 08 Apr, 2019

setsid command in Linux system is used to run a program in a new session. The command will call the fork(2) if already a process group leader. Else, it will execute a program in the current process.

Syntax:

setsid [options] program [arguments]

Example: It will execute our shell script in a new session.

Options:



  • setsid -c: This option will set the controlling terminal to the current one.

    Example:

    sudo setsid -c ./add.sh

    In this example, we have our current terminal set to controlling terminal.

  • setsid -w: This option will wait for the execution of the program to end and return the exit value of this program as the return value of setsid.

    Example:

    setsid -w ./add.sh

    In this example, if there’s any process which is supposed to take some time to be fully executed then, in that case, it will return the exit value.

  • setsid -V : This option will show the version information and exit.

    Example:

    setsid -V

  • setsid -h : This option will show the help text and exit.
    setsid -h

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