All examples presented in this book assume that you are using an sh-compatible shell. The bash shell is sh compatible and is the standard shell of all Linux distributions. If you happen to be a csh user, you will have to make appropriate adjustments.
The following is a list of the typographical conventions used in this book:
Italic
Used for file and directory names, program and command names, email addresses and pathnames, URLs, and for emphasizing new terms.
Boldface
Used for machine names, hostnames, site names, and for occasional emphasis.
Constant Width
Used in examples to show the contents of code files or the output from commands and to indicate environment variables and keywords that appear in code.
Constant Width Italic
Used to indicate variable options, keywords, or text that the user is to replace with an actual value.
Constant Width Bold
Used in examples to show commands or other text that should be typed literally by the user.
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