main_sigh
if(signal(SIGINT, main_sigh) == SIG_ERR ||
signal(SIGQUIT, main_sigh) == SIG_ERR ||
signal(SIGHUP, main_sigh) == SIG_ERR ||
signal(SIGBREAK, main_sigh) == SIG_ERR ||
signal(SIGTERM, main_sigh) == SIG_ERR)