NAME

       killpg - send signal to all members of a process group.

SYNOPSIS

       #include <signal.h>

       int killpg(pid_t pidgrp, int signal);

DESCRIPTION

       The killpg() function causes signal signal to be sent to all the processes in the process group pidgrp or
       to the processes' own process group if pidgrp is equal to zero.

       It is equivalent to

       kill(-pidgrp,signal);

RETURN VALUE

       The value returned is -1 on error, or 0 for success.

ERRORS

       Errors are returned in errno and can be one of the following:

       EINVAL for an invalid signal,

       ESRCH  for a process group which does not exist, and

       EPERM  if  the  userid  of the calling process is not equal to that of the process the signal is sent to,
              and the userid is not that of the superuser.

CONFORMING TO

       ???

SEE ALSO

       kill(2), signal(2), signal(7)

GNU                                               April 4, 1993                                        KILLPG(3)