Conventions Used in This Book
The following is a list of the typographical conventions used in this book:
- Bold
is used for machine names, hostnames, usernames, and IDs.
- Italic
is used for file and directory names, program and command names, command-line options, email addresses and pathnames, site names, and new terms.
-
Constant Width is used in examples to show the contents of files or the output from commands, to indicate environment variables and keywords that appear in code, and for Emacs commands.
-
Constant Italic is used to indicate variable options, keywords, or text that the user is to replace with an actual value.
-
Constant Bold is used in examples to show commands or other text that should be typed literally by the user.
-
This icon above a paragraph is for Caution: you can make a mistake here that disables or damages your system or is hard to recover from.