Como verificar todos los servicios iniciados en run level 3

root@asterisk-dominicana:~#  ls /etc/rc3.d/S*

/etc/rc3.d/S50asterisk   /etc/rc3.d/S75sudo       /etc/rc3.d/S99grub-common
/etc/rc3.d/S50rsync      /etc/rc3.d/S91apache2    /etc/rc3.d/S99ondemand
/etc/rc3.d/S70dns-clean  /etc/rc3.d/S99cdp-agent  /etc/rc3.d/S99rc.local
/etc/rc3.d/S70pppd-dns   /etc/rc3.d/S99fail2ban