-preparation-get a cup of coffee and some snacks to accompany you :D
-goal-wee can disabled and enabled startup service on ubuntu
The procedure for disabling a service in Ubuntu is very simple: all you have to do is remove the symlinks from all the runlevel-specific directories, /etc/rc*.d, so that no links are pointing to the original /etc/init.d script for your service.
-for to do-This example below shows how a service called "bind9" was disabled on my system:
root@traficmng:/home/momod# update-rc.d -f bind9 remove Removing any system startup links for /etc/init.d/bind9 ... /etc/rc0.d/K20bind9 /etc/rc1.d/K20bind9 /etc/rc2.d/S20bind9 /etc/rc3.d/S20bind9 /etc/rc4.d/S20bind9 /etc/rc5.d/S20bind9 /etc/rc6.d/K20bind9
root@traficmng:/home/momod# update-rc.d bind9 defaults Adding system startup for /etc/init.d/bind9 ... /etc/rc0.d/K20bind9 -> ../init.d/bind9 /etc/rc1.d/K20bind9 -> ../init.d/bind9 /etc/rc6.d/K20bind9 -> ../init.d/bind9 /etc/rc2.d/S20bind9 -> ../init.d/bind9 /etc/rc3.d/S20bind9 -> ../init.d/bind9 /etc/rc4.d/S20bind9 -> ../init.d/bind9 /etc/rc5.d/S20bind9 -> ../init.d/bind9
-testing n checking-just tray on your computer/server for more practice and testing .. :D
-nb-tested by me... ^_^