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 (con-
       sult 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  sim-
       pler  System  V  getpgrp()  suffices,  and the added complexity of the 4.3 BSD getpgrp() is provided by the XSI extension
       getpgid().

FUTURE DIRECTIONS
       None.

SEE ALSO
       exec(),  fork(),  getpgid(),  getpid(),  getppid(),  kill(),  setpgid(),  setsid(),  the  Base  Definitions   volume   of
       IEEE Std 1003.1-2001, <sys/types.h>, <unistd.h>

COPYRIGHT
       Portions  of  this  text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for
       Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6,  Copy-
       right (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. 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.open-
       group.org/unix/online.html .



IEEE/The Open Group                                           2003                                                   GETPGRP(3P)