Conventions Used in This Book

This book uses certain typographic styles in order to help you quickly identify important information and help you to avoid confusion over the meaning of words. In particular:

• A normal proportionally spaced font is used for the bulk of the text in the book.

• Italicized text indicates technical terms that are introduced for the first time in a chapter. (Italics are also used for emphasis.)

• A monospaced font is used to indicate the contents of configuration files, messages displayed at a text-mode Linux shell prompt, filenames, and Internet URIs.

• Italicized monospaced text indicates a variable—information that differs from one system or command run to another, such as the name of a client computer or a process ID number.

• Bold monospaced text is information that you're to type into the computer, usually at a Linux shell prompt. This text can also be italicized to indicate that you should substitute an appropriate value for your system.

In addition to these text conventions, which can apply to individual words or entire paragraphs, a few conventions are used to highlight segments of text:

Note A Note indicates information that's useful or interesting, but that's somewhat peripheral to the main discussion. A Note might be relevant to a small number of networks, for instance, or refer to an outdated feature. Tip A Tip provides information that can save you time or frustration, and that may not be entirely obvious. A Tip might describe how to get around a limitation or how to use a feature to perform an unusual task. Warning Warnings describe potential pitfalls or dangers. If you fail to heed a Warning, you may end up spending a lot of time recovering from a bug, or even

This document was created by an unregistered ChmMagic, please go to to regist* restoring your entire system from scratch.

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