Surely you're joking, right? For one, Ubuntu has a desktop and server version along with a LTS version and the repos are totally different. The filesystem layou

Surely you're joking, right? For one, Ubuntu has a desktop and server version along with a LTS version and the repos are totally different. The filesystem layout is little different between the two. I'm sure there's more like init differences, differences in installation and configuration, kernels, and stuff in /etc, but I haven't used Ubuntu in quite some time.