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KILLPG(2)							     KILLPG(2)

NAME
       killpg - send signal to a process group

SYNOPSIS
       killpg(pgrp, sig)
       int pgrp, sig;

DESCRIPTION
       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.

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

ERRORS
       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 group.

       [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.

SEE ALSO
       kill(2), getpgrp(2), sigvec(2)

4th Berkeley Distribution	 May 14, 1986			     KILLPG(2)

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