Introduction to Linux:
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9. Conventions used in this document
The following typographic and usage conventions occur in this text:
Table 1. Typographic and usage conventions
  Â
   Text type
   Meaning
  Â
"Quoted text"
   Quotes from people, quoted computer output.
  Â
  Â
terminal view
   Literal computer input and output captured from the terminal, usually rendered with a light grey background.
  Â
command
   Name of a command that can be entered on the command line.
  Â
VARIABLE
   Name of a variable or pointer to content of a variable, as in $VARNAME
.
  Â
option
   Option to a command, as in "the -a
option to the ls
command"
.
  Â
argument
   Argument to a command, as in "read man ls
"
.
  Â
prompt
  Â
User prompt, usually followed by a command that you type in a terminal window, like in hilda@home>
ls -l
  Â
command options arguments
   Command synopsis or general usage, on a separated line.   filename    Name of a file or directory, for example "Change to the /usr/bin directory."
   Key    Keys to hit on the keyboard, such as "type Q to quit" .
   Button    Graphical button to click, like the OK button.
   Menu ->Choice    Choice to select from a graphical menu, for instance: "SelectHelp ->About Mozilla in your browser."
   Terminology    Important term or concept: "The Linux kernel is the heart of the system."
  Â
  Â
\
   The backslash in a terminal view or command synopsis indicates an unfinished line. In other words, if you see a long command that is cut into multiple lines, \ means "Don't press Enter
yet!"
   See Chapter 1
   link to
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