How to remove/backup script from /etc/init.d/?

Solution 1:

There are a couple ways. If you just want to do this temporarily, you can remove the execute bit from the file:

$ chmod -x /etc/init.d/varnish

Then re-add it when appropriate:

$ chmod +x /etc/init.d/varnish

The "official" way in Ubuntu (as well as in Debian and other Debian derivatives), though, is to use the update-rc.d command:

$ update-rc.d varnish disable

This will remove all of the symlinks from the /etc/rcX.d folders, which take care of starting and stopping the service when appropriate.

See the update-rc.d man page for more information.

$ sudo update-rc.d -f servicename remove