Debian GNU/Linux System Administrator's Manual
by Ardo van Rangelrooij
The purpose of this manual is to help you to administer a Debian GNU/Linux system. Administration of any Unix machine is a complex task, that is not to be learnt overnight. This manual is intended to help you learn the basics of administration, and to build on that to get the best out of your machine for yourself and your users. The manual assumes the reader is familiar with using a Unix system and/or understands Debian User Reference Manual.
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by J.L. Sanchez-Montanes, S.B. Ramos, R.B. Vinas, F.A. Llinas - FTA
The aim of this book is to initiate you into the world of GNU/Linux. the text covers the basics of the free software, how to use and modify GNU/Linux to suit your needs, and how to find your way in this new world more easily.
by Bill McCarty - O'Reilly
Topics covered: Installing Debian Linux and the GNU suite, X windowing system, performing critical administration and management tasks, setting up LAN, setting up the Apache Web server, and using the Debian package-management utilities.
by Pawel - Wikibooks
The book will show you how to install Debian unstable 'sid' in a quick and painless way using Sidux LiveCD, its basic configuration and the useful applications. You can use most of the commands shown here with all operating systems based on Debian.
by Graham Williams - Togaware.com
This book will get you up to speed with GNU/Linux and deliver a fun and productive environment. It guides you through the different regions of a GNU/Linux system with a focus on getting your desktop environment to do what you want it to do.