getpgrp man page on Archlinux

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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.

NAME
       getpgrp — get the process group ID of the calling process

SYNOPSIS
       #include <unistd.h>

       pid_t getpgrp(void);

DESCRIPTION
       The getpgrp() function shall return the process group ID of the calling
       process.

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

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       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‐
       sion getpgid().

FUTURE DIRECTIONS
       None.

SEE ALSO
       exec,  fork(),  getpgid(), getpid(), getppid(), kill(), setpgid(), set‐
       sid()

       The Base Definitions volume of POSIX.1‐2008, <sys_types.h>, <unistd.h>

COPYRIGHT
       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 .

       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.ker‐
       nel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group		     2013			   GETPGRP(3P)
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