Conventions Used in This Book
The following typographical conventions are used
in this book:
Italic
-
Indicates new terms, URLs, email addresses,
filenames, file extensions, pathnames, directories, and Unix
utilities.
Constant width
-
Indicates commands, options, parameters, and
arguments that must be substituted into commands.
-
Constant width bold
-
Shows commands or other text that should be
typed literally by the user. Also used for emphasis in code.
Constant width
italic
-
Shows text that should be replaced with
user-supplied values.
[ Keywords and other stuff
]
-
Indicates optional keywords and arguments.
{ choice-1 | choice-2 }
-
Signifies either choice-1 or choice-2.
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This icon signifies a tip, suggestion, or
general note.
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This icon indicates a warning or caution.
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