Task: Command line tool to manage services / Ubuntu runlevel
update-rc.d automatically updates the System V style init script links /etc/rcrunlevel.d/NNname to scripts /etc/init.d/name. These are run by init when changing runlevels and are generally used to start and stop. For example turn on ssh service type the command:# update-rc.d ssh defaultsOR$ sudo update-rc.d ssh defaults
Task: Remove service
Again use update-rc.d command:# update-rc.d SERVICE-NAME removeOR$ sudo update-rc.d SERVICE-NAME remove
Task: Use Text based GUI Runlevel configuration tool to add or remove services
rcconf is Debian runlevel configuration tool. Rcconf allows you to control which services are started when the system boots up or reboots. It displays a menu of all the services which could be started at boot. The ones that are configured to do so are marked and you can toggle individual services on and off. If rcconf is not installed use apt-get command:# apt-get install rcconfOR$ sudo apt-get install rcconfNow run rcconf and just follow on screen instructions:# rcconf
Thanks
http://www.cyberciti.biz/faq/howto-runlevel-configuration-tool-to-start-service/