in reply to
OT - Unix Administration - What's needed?
Well, for one.. who could properly use UNIX without the Camel book ;-)
Seriously though, knowing which variety of UNIX you would be administrating would be a good help. Having an admin book specific to that OS would likely prove most useful.
There are a few books that I have gotten much out of though. I find "Essential System Administration, 2nd edition" by Aeleen Frisch to be an all around good, generic UNIX/Linux book. If you'll be dealing with mail administration, and Sendmail in particular, the book "Sendmail, 2nd edition" by Bryan Costales would be an excellent choice, as mail administration can tend to be a bit complicated at times, to say the least :-) Also, if you'll be doing DNS admin too, you will find "DNS and BIND, 3rd Ed" by Paul Albitz & Cricket Lie to be quite useful.
And if you are looking for some general "cool stuff", grab a copy of "UNIX PowerTools". Thats a good book :-)
You'll find that with UNIX admin, Perl really comes in handy, and will really help you automate various tasks that you will come aross. With that, regular expressions are heavily used in the UNIX world, so if you don't have "Mastering Regular Expressions" by Jeffrey Friedl, now would be a good time to get it.
Every book I mentioned is an O'Reilly book, so by the time you're done book shopping, you'll have quite a zoo :-) Good luck in your new position!
Update: I think you'll also find that some of what you'll be doing will be based on what's going on in the Internet community. Ie, you'll monitor the bugtrack mailing list, and every few months, you'll mutter "Oh no, not another DNS/BIND remote exploit", and you'll wander out to grab the latest version :-) The point being though that even if you don't have a book for everything, much of what you'll need to do you can find (instructions for | information on) the Internet.