setsid(1) [bsd man page]

SETSID(1)							   User Commands							 SETSID(1)

NAME

       setsid - run a program in a new session

SYNOPSIS

       setsid [options] program [arguments]

DESCRIPTION

       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.

OPTIONS

       -c, --ctty
	      Set the controlling terminal to the current one.

       -w, --wait
	      Wait for the execution of the program to end, and return the exit value of this program as the return value of setsid.

       -V, --version
	      Display version information and exit.

       -h, --help
	      Display help text and exit.

SEE ALSO

       setsid(2)

AUTHOR

       Rick Sladkey <jrs@world.std.com>

AVAILABILITY

       The setsid command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.

util-linux							     July 2014								 SETSID(1)

Check Out this Related Man Page

SETSID(2)						     Linux Programmer's Manual							 SETSID(2)

NAME

       setsid - creates a session and sets the process group ID

SYNOPSIS

       #include <unistd.h>

       pid_t setsid(void);

DESCRIPTION

       setsid() creates a new session if the calling process is not a process group leader.  The calling process is the leader of the new session,
       the process group leader of the new process group, and has no controlling tty.  The process group ID and session ID of the calling  process
       are set to the PID of the calling process.  The calling process will be the only process in this new process group and in this new session.

RETURN VALUE

       On  success,  the  (new) session ID of the calling process is returned.	On error, (pid_t) -1 is returned, and errno is set to indicate the
       error.

ERRORS

       EPERM  The process group ID of any process equals the PID of the calling process.  Thus, in  particular,  setsid()  fails  if  the  calling
	      process is already a process group leader.

CONFORMING TO

       SVr4, POSIX.1-2001.

NOTES

       A child created via fork(2) inherits its parent's session ID.  The session ID is preserved across an execve(2).

       A  process  group  leader is a process with process group ID equal to its PID.  In order to be sure that setsid() will succeed, fork(2) and
       _exit(2), and have the child do setsid().

SEE ALSO

       getsid(2), setpgid(2), setpgrp(2), tcgetsid(3), credentials(7)

COLOPHON

       This page is part of release 3.27 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    2008-12-03								 SETSID(2)

Linux and UNIX Man Pages

setsid(1) [bsd man page]

Check Out this Related Man Page