I have been presented with a server running Ubuntu 12.04 LTS server edition.
This machine was in use earlier for a web application and also has many other applications configured in it. Now, I want to remove all the un necessary applications from it like apache2 etc. and do a fresh start for installation of the new application.
Now, the problem is how can I determine what applications i.e. packages are installed in it, and how can I disable/uninstall and optimize this server.
After uninstalling the packages I want to optimize it to disable Packages for Securing it much like point number 3 in the link here.
But it's not for Ubuntu.