1GETPGRP(3P)                POSIX Programmer's Manual               GETPGRP(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

12       getpgrp - get the process group ID of the calling process
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SYNOPSIS

15       #include <unistd.h>
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17       pid_t getpgrp(void);
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DESCRIPTION

21       The getpgrp() function shall return the process group ID of the calling
22       process.
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RETURN VALUE

25       The  getpgrp()  function shall always be successful and no return value
26       is reserved to indicate an error.
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ERRORS

29       No errors are defined.
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31       The following sections are informative.
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EXAMPLES

34       None.
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APPLICATION USAGE

37       None.
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RATIONALE

40       4.3 BSD provides a getpgrp() function that returns the process group ID
41       for  a  specified process. Although this function supports job control,
42       all known job control shells always specify the  calling  process  with
43       this  function.  Thus, the simpler System V getpgrp() suffices, and the
44       added complexity of the 4.3 BSD getpgrp() is provided by the XSI exten‐
45       sion getpgid().
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FUTURE DIRECTIONS

48       None.
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SEE ALSO

51       exec(), fork(), getpgid(), getpid(), getppid(), kill(), setpgid(), set‐
52       sid(),   the   Base   Definitions   volume   of   IEEE Std 1003.1-2001,
53       <sys/types.h>, <unistd.h>
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56       Portions  of  this text are reprinted and reproduced in electronic form
57       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
58       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
59       Specifications Issue 6, Copyright (C) 2001-2003  by  the  Institute  of
60       Electrical  and  Electronics  Engineers, Inc and The Open Group. In the
61       event of any discrepancy between this version and the original IEEE and
62       The  Open Group Standard, the original IEEE and The Open Group Standard
63       is the referee document. The original Standard can be  obtained  online
64       at http://www.opengroup.org/unix/online.html .
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68IEEE/The Open Group                  2003                          GETPGRP(3P)
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