I've recently bought a VPS running ubuntu 9.04 and although I've used linux before, I'm beginning to feel very overwhelmed managing a system strictly in a terminal.

Thus, I was wondering if anyone can recommend a good textbook for managing an Ubuntu server. I'm looking for something that's heavily command-line-centric. If it teaches how to do things in both GUI and CLI environments, that's wonderful but I'm mainly interested in the latter.

Here are a few of the ones I was considering:

Does anyone have any recommendations for or against any of these, or perhaps another? I also wouldn't mind hearing suggestions for general Linux books not specific to ubuntu, but that also teach you how to do all the basics in the command line.

PS: This may not be the best fit for this forum, but I struggled for about ten minutes trying to find the most appropriate one.