This book uses the following typographical conventions:
is used for the names of files, directories, hostnames, domain names,
and to emphasize new terms when they are introduced.
- Constant width
is used to show the contents of files or the output from commands. It
is also used to represent commands, options, and keywords in text.
- Constant width bold
is used in examples to show commands typed on the command line.
- Constant width 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.)
- %, #
Commands that you would give interactively are shown using the
default C shell prompt (%). If the command must be
executed as root, it is shown using 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, optional parts of the command are placed
within brackets. For example, ls
[ -l ] means
that the -l option is not required.
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