Conventions Used in This Book

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The following conventions are used in this book:


Used for Unix file, directory, user , and group names and for Perl modules, objects, method names , and method options. It is also used for example URLs (uniform resource locators) and to emphasize new terms and concepts when they are introduced.

Constant Width

Used for Unix commands, code examples, and system output. It is also used for scripts, process names, and SpamAssassin directives.

Constant Width Italic

Used in examples for variable input (e.g., a filename you must provide).


The Unix Bourne shell or Korn shell prompt.


The Unix superuser prompt. I use this symbol for examples that should be executed by root.

This icon designates a note, which is an important aside to the nearby text.

This icon designates a warning related to the nearby text.

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ISBN: 0596007078
EAN: 2147483647
Year: 2004
Pages: 88

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