Conventions Used in This Book

I use the following font conventions in this book:


Indicates Unix pathnames, filenames, and program names; Internet addresses, such as domain names and URLs; and new terms where they are defined


Indicates names of GUI items, such as window names, buttons, menu choices, etc.

Constant width

Indicates command lines and options that should be typed verbatim; names and keywords in system scripts, including commands, parameter names, and variable names; and XML element tags

This icon indicates a tip, suggestion, or general note.

This icon indicates a warning or caution.