creates a session and sets the process group ID
setsid [options] program [arguments]
setsid runs a program in a new session. The command calls fork(2) if already a process group leader. Otherwise, it executes a program in the current process. This default behavior is possible to override by the --fork option.
Set the controlling terminal to the current one.
Always create a new process.
Wait for the execution of the program to end, and return the exit status of this program as the exit status of setsid.
Display version information and exit.
Display help text and exit.
For bug reports, use the issue tracker at <https://github.com/karelzak/util-linux/issues>.
The setsid command is part of the util-linux package which can be downloaded from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util-linux/>.