I have a leased server I've had for five years that is running Ubuntu 10.0.04LTS. I was trying to do an upgrade to something more recent (since apt-get kept erroring out) and found I don't have update-manager installed. apt-get can't find what it needs to install update-manager, so I'm stuck now. Ultimately, I just want to upgrade the system. So the question is how do I install update-manager when apt-get isn't making it happen?
Important point: I don't have any GUI here, only the command line.