I have an Ubuntu 10.04 running on a server. I know that it isn't supported anymore, so I want to upgrade it to Ubuntu 14.04.
I have had problems trying to do this (in a testing environment, of course), because some dependencies couldn't be resolved or some packages couldn't be found (And to be certain, that was from Ubuntu 10.04 to Ubuntu 12.04). I want to make certain that some packages are available in Ubuntu 14.04, or at least alternatives, because the server has a lot of applications that need dependencies which are, maybe, only available in Ubuntu 10.04 and when migrated... Not good things are going to happen if I upgrade it and they aren't available.
What can I do to make certain that all the necessary dependencies are going to be met? I was thinking about an
dpkg -l in both Ubuntu versions and compare them...