GETPGRP(3P) POSIX Programmer's Manual GETPGRP(3P)PROLOG
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.
NAMEgetpgrp — get the process group ID of the calling process
The getpgrp() function shall return the process group ID of the calling
The getpgrp() function shall always be successful and no return value
is reserved to indicate an error.
No errors are defined.
The following sections are informative.
4.3 BSD provides a getpgrp() function that returns the process group ID
for a specified process. Although this function supports job control,
all known job control shells always specify the calling process with
this function. Thus, the simpler System V getpgrp() suffices, and the
added complexity of the 4.3 BSD getpgrp() is provided by the XSI exten‐
exec, fork(), getpgid(), getpid(), getppid(), kill(), setpgid(), set‐
The Base Definitions volume of POSIX.1‐2008, <sys_types.h>, <unistd.h>
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 Electri‐
cal 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 .
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IEEE/The Open Group 2013 GETPGRP(3P)