If you are attempting to build multiple Ubuntu server installations, here is some information you will find helpful in making each server have the same software packages. This is a quick way to bring up more than one server with identical package lists utilizing the dpkg technology.
First, build your first server exactly the way you want it. Once you are happy with the package list, get a command line and do:
# dpkg --get-selections > dpkg.list
You need to copy this file over to another server that you want to make the package base the same. Once there, you should make certain your package sources are up to date:
# apt-get update
Now, set the dpkg list to be the same as the other server:
# dpkg --set-selections < /tmp/dpkg.list
The package list is now the same, so have the system add/remove/update the packages to match:
# apt-get -u dselect-upgrade
That's all there is to it! You now have two servers with identical package lists!
Craig Deering
Network Engineer
Astro Shapes, Inc. - Aluminum Extrusions
Website - http://www.astroshapes.com
