
Preface xiii
WhatTypographicChangesandSymbolsMean
Section Table P-1, “Typographic Conventions describes the typefaces and
symbols used in this book.
Table P-1 Typographic Conventions
Typeface or
Symbol Meaning Example
AaBbCc123 The names of commands, files,
and directories; on-screen
computer output
Edit your.login file.
Use ls -a to list all files.
system% You have mail.
AaBbCc123 What you type, contrasted with
on-screen computer output
system% su
Password:
AaBbCc123 Command-line placeholder:
replace with a real name or
value
To delete a file, type rm filename.
AaBbCc123 Book titles, new words or terms,
or words to be emphasized
Read Chapter 6 in User’s Guide.
These are called class options.
You must be root to do this.
Code samples are included in boxes and may display the following:
% UNIX C shell prompt system%
$ UNIX Bourne and Korn shell
prompt
UNIX Bourne and Korn shell
prompt
# Superuser prompt, all shells Superuser prompt, all shells
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