Manual Pages  — KILLPG

killpg – send signal to a process group

LIBRARY SYNOPSIS DESCRIPTION RETURN VALUES ERRORS SEE ALSO HISTORY

Standard C Library (libc, -lc)

#include <sys/types.h>

#include <signal.h>

int
killpg(pid_t pgrp, int sig);

The killpg function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

The killpg() function will fail and no signal will be sent if:

[EINVAL]
	The sig argument is not a valid signal number.
[ESRCH]
	No process can be found in the process group specified by pgrp.
[EPERM]
	kill() returns EPERM for all processes in the process group.

The killpg() function appeared in BSD 4.0 .