killpg(3N)                                             killpg(3N)



NAME
     killpg - sends signal to a process group

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

DESCRIPTION
     killpg sends the signal sig to the process group pgrp.

     The sending process and members of the process group must
     have the same effective user ID, otherwise this call is
     restricted to the superuser.  As a single special case the
     continue signal SIGCONT may be sent to any process which is
     a descendant of the current process.

STATUS MESSAGES AND VALUES
     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.

     The CONTROLcommand 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 corresponding to that specified
          by pgrp.

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

SEE ALSO
     kill(2), getpid(2)

















January 1992                                                    1