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Sometimes referred to as the command screen or a
text interface, the command line is a user interface
that is navigated by typing commands at prompts, as
opposed to using the mouse to perform a command.
For example, the root MS-DOS command line prompt
is C:\> (as shown in the picture) and in Unix or Linux
may be % or >. Unlike a GUI operating system, a
command line only uses a keyboard to navigate by
entering commands and does not utilize a mouse.
Because a command line interface requires unique
commands, this interface is often more difficult to
learn because of the need to memorize dozens of
different commands. However, a command line
operating system can be a very valuable resource
and should not be ignored. For example, users who
have Microsoft Windows may find trivial tasks such
as renaming 100+ files in a folder a very difficult task;
however, this is something that can be done in a
matter of seconds through a simple command at the
command line.
Text interface with menus
A text interface can be made easier to navigate with
menus created with text and extended ASCII
extended characters. For example, many command
line text editors have some type of interface with
menus and shortcut keys that make navigating the
file being edited easier. In the example below, is a
picture of the MS-DOS Editor used to edit files while
at the MS-DOS or Windows command line.
Although a text interface with menus has a lot more
visual appeal than the command line, this interface is
still considered a text interface and not a graphical
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