Conventions Used in This Book This book uses the following typographical conventions: Italic Indicates Unix pathnames, filenames, commands, and packages and program names; Internet addresses, such as domain names and URLs; account usernames; and new terms where they are defined. Constant Width Indicates command lines and options that should be typed verbatim, as well as names and keywords in system scripts, including commands, parameter names, and variable names. Constant Width Bold Used in examples and tables to show commands or other text that should be typed literally by the user. Constant Width Italic Used in examples and tables to show text that should be replaced with user-supplied values.
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