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SETPGRP(3P) POSIX Programmer's Manual SETPGRP(3P)
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior), or
the interface may not be implemented on Linux.
setpgrp — set the process group ID
#include <unistd.h>
pid_t setpgrp(void);
If the calling process is not already a session leader, setpgrp()
sets the process group ID of the calling process to the process ID of
the calling process. If setpgrp() creates a new session, then the new
session has no controlling terminal.
The setpgrp() function has no effect when the calling process is a
session leader.
Upon completion, setpgrp() shall return the process group ID.
No errors are defined.
The following sections are informative.
None.
It is unspecified whether this function behaves as setpgid(0,0) or
setsid() unless the process is already a session leader. Therefore,
applications are encouraged to use setpgid() or setsid() as
appropriate.
None.
The setpgrp() function may be removed in a future version.
exec(1p), fork(3p), getpid(3p), getsid(3p), kill(3p), setpgid(3p),
setsid(3p)
The Base Definitions volume of POSIX.1‐2008, unistd.h(0p)
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The Open
Group Base Specifications Issue 7, Copyright (C) 2013 by the
Institute of Electrical and Electronics Engineers, Inc and The Open
Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
applied.) In the event of any discrepancy between this version and
the original IEEE and The Open Group Standard, the original IEEE and
The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.unix.org/online.html .
Any typographical or formatting errors that appear in this page are
most likely to have been introduced during the conversion of the
source files to man page format. To report such errors, see
https://www.kernel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2013 SETPGRP(3P)
Pages that refer to this page: unistd.h(0p), setsid(3p)