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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 dif-
       fer (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  func-
       tion.  Thus, the simpler System V getpgrp() suffices, and the added complexity of the 4.3 BSD getpgrp() is pro-
       vided 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, Stan-
       dard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base  Specifica-
       tions  Issue  6,  Copyright (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 Stan-
       dard,  the  original  IEEE  and  The  Open Group Standard is the referee document. The original Standard can be
       obtained online at http://www.opengroup.org/unix/online.html .



IEEE/The Open Group                  2003                          GETPGRP(3P)