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, 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                                            SETPGRP(P)