9. Conventions used in this document

The following typographic and usage conventions occur in this text:

Table 1. Typographic and usage conventions

Text typeMeaning
"Quoted text"Quotes from people, quoted computer output.
terminal view
Literal computer input and output captured from the terminal, usually rendered with a light grey background.
commandName of a command that can be entered on the command line.
VARIABLEName of a variable or pointer to content of a variable, as in $VARNAME.
optionOption to a command, as in "the -a option to the ls command".
argumentArgument to a command, as in "read man ls".

command options arguments

Command synopsis or general usage, on a separated line.
filenameName of a file or directory, for example "Change to the /usr/bin directory."
KeyKeys to hit on the keyboard, such as "type Q to quit".
ButtonGraphical button to click, like the OK button.
Menu->ChoiceChoice to select from a graphical menu, for instance: "Select Help->About Mozilla in your browser."
TerminologyImportant term or concept: "The Linux kernel is the heart of the system."
See Chapter 1link to related subject within this guide.
The authorClickable link to an external web resource.

The following images are used:

NoteThis is a note

It contains additional information or remarks.

CautionThis is a caution

It means be careful.

WarningThis is a warning

Be very careful.

TipThis is a tip

Tips and tricks.