KILLPG(2)                                                            KILLPG(2)



NAME
       killpg - send signal to a process group

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

DESCRIPTION
       _K_i_l_l_p_g  sends  the signal _s_i_g to the process group _p_g_r_p.  See _s_i_g_v_e_c(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 _e_r_r_n_o is set  to  indi‐
       cate the error.

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

       [EINVAL]       _S_i_g is not a valid signal number.

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

       [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)