[Preface] Conventions
Author: Craig Hunt
Date: 1999-02-04T01:30:48Z

#

| Preface |

## Conventions

This book uses the following typographical conventions:

Italic

  is used for the names of files, directories, hostnames, domain names, and to emphasize new terms when they are first introduced.

Bold

  is used for command names.

`Constant width`

  is used to show the contents of files or the output from commands. Keywords are also in `constant width`.

`Constant bold`

  is used in examples to show commands or text that you would type.

`Constant italic`

  is used in examples and text to show variables for which a context-specific substitution should be made. (The variable `filename`, for example, would be replaced by some actual filename.)

`%`, `#`

  When we demonstrate commands that you would give interactively, we normally use the default C shell prompt (`%`). If the command must be executed as root, then we use the default superuser prompt (`#`). Because the examples may include multiple systems on a network, the prompt may be preceded by the name of the system on which the command was given.

[ option ]

  When showing command syntax, we place optional parts of the command within brackets. For example, ls [ -l ] means that the -l option is not required.

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