How to build an exactly similar ubuntu installation on another computer
(I have not yet tried this myself....partha)
Copied from :: http://www.shibuvarkala.com/2012/07/how-to-build-exactly-similar-ubuntu.html
Here is an easy way to build an exactly similar ubuntu installation on another computer. Run $ dpkg --get-selections >my_pakages on the machine that you want to clone. Install a clean copy of Ubuntu on the target machine. Copy the file my_packages to the target machine. Run the following command on the target machine. $ sudo dpkg --set-selections < ./package_names $ sudo apt-get -u dselect-upgrade Done.