Function usage

tools/route/route.c:185–196

}

static void
usage(const char *cp)
{
	if (cp != NULL)
		warnx("bad keyword: %s", cp);
#ifndef FSTACK
	errx(EX_USAGE, "usage: route [-46dnqtv] command [[modifiers] args]");
#else
	errx(EX_USAGE, "usage: route -p <f-stack proc_id> [-46dnqtv] command [[modifiers] args]");
#endif
	/* NOTREACHED */
}

int
main(int argc, char **argv)