https://images.linoxide.com/systemd-vs-sysVinit-cheatsheet.pdf
service --status-all
service <servicio> {start|stop|restart}
/sbin/update-rc.d <servicio> disable
/sbin/update-rc.d -f <servicio> remove
/sbin/update-rc.d <servicio> enable [<runlevel S,2,3,4,5>]
apt-get install sysv-rc-conf