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setsid(1) [v7 man page]

SETSID(1)							   User Commands							 SETSID(1)

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 <> AVAILABILITY
The setsid command is part of the util-linux package and is available from util-linux July 2014 SETSID(1)

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SETSID(2)						      BSD System Calls Manual							 SETSID(2)

setsid -- create session and set process group ID LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <unistd.h> pid_t setsid(void); DESCRIPTION
The setsid() function creates a new session. The calling process is the session leader of the new session, is the process group leader of a new process group and has no controlling terminal. The calling process is the only process in either the session or the process group. Upon successful completion, the setsid() function returns the value of the process group ID of the new process group, which is the same as the process ID of the calling process. ERRORS
If an error occurs, setsid() returns -1 and the global variable errno is set to indicate the error, as follows: [EPERM] The calling process is already a process group leader, or the process group ID of a process other than the calling process matches the process ID of the calling process. SEE ALSO
getsid(2), setpgid(2), tcgetpgrp(3), tcsetpgrp(3) STANDARDS
The setsid() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1''). BSD
April 4, 2011 BSD
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