KILLPG(2)	    UNIX Programmer's Manual		KILLPG(2)

     killpg - send signal to a process group

     killpg(pgrp, sig)
     int pgrp, sig;

     Killpg sends the signal sig to the process group pgrp.  See
     sigvec(2) for a list of signals.

     The sending process and members of the process group must
     have the same effective user ID, or the sender must be the
     super-user.  As a single special case the continue signal
     SIGCONT may be sent to any process that is a descendant of
     the current process.

     Upon successful completion, a value of 0 is returned.  Oth-
     erwise, a value of -1 is returned and the global variable
     errno is set to indicate the error.

     Killpg will fail and no signal will be sent if any of the
     following occur:

     [EINVAL]	    Sig is not a valid signal number.

     [ESRCH]	    No process can be found in the process group
		    specified by pgrp.

     [ESRCH]	    The process group was given as 0 but the
		    sending process does not have a process

     [EPERM]	    The sending process is not the super-user and
		    one or more of the target processes has an
		    effective user ID different from that of the
		    sending process.

     kill(2), getpgrp(2), sigvec(2)

Printed 11/26/99	  May 14, 1986				1

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