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 .