Conventions Used in This Book

The following typographical conventions are used in this book:

Italic

Indicates commands, example URLs, passwords, error messages, filenames, emphasis, and the first use of technical terms

Constant width

Indicates IP addresses and Unix command-line examples

Constant width bold italic

Indicates replaceable text

Constant width bold

Indicates user input

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

This icon indicates a warning or caution.