SETPGRP(3P)                                         POSIX Programmer's Manual                                        SETPGRP(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
       setpgrp - set the process group ID

SYNOPSIS
       #include <unistd.h>

       pid_t setpgrp(void);


DESCRIPTION
       If the calling process is not already a session leader, setpgrp() sets the process group ID of the calling process to the
       process ID of the calling process. If setpgrp() creates a new session, then the new session has no controlling terminal.

       The setpgrp() function has no effect when the calling process is a session leader.

RETURN VALUE
       Upon completion, setpgrp() shall return the process group ID.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       exec(), fork(), getpid(), getsid(), kill(), setpgid(), setsid(), the Base  Definitions  volume  of  IEEE Std 1003.1-2001,
       <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                                                   SETPGRP(3P)