“What?” you say, “that’s a lot of Ubuntu going on! Why would you want to do such a thing?” The answer – for testing applications, replicating environments or perhaps running a few servers on one box. More here

This guide should work pretty well for any Linux distro, though you may need to replace the aptitude commands with the package manager of your choice. Here we’ll install a Hardy Heron guest inside an Intrepid Ibex host. Afterwards, we’ll also use dselect with apt in order to clone the packages on a machine we wish to replicate onto our guest OS. Oh ho the fun