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 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, 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  Standard,  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(P)