About this Book
This book was written as a reference for system administrators. You can read the book cover to cover, and we’ve tried to arrange the chapters in a logical progression, but, in the end, it works best as a reference, where you can explore a topic more deeply in the chapter that is devoted to a particular subject. Chapter 1 will tell you more about what you will learn in the book, and what you need to know before you start.
The 40 chapters in the book are arranged into four parts, as follows: