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Command line interpreter

A command line interpreter is a program which reads a line of text the user has typed and interprets this text in the context of a given system.

Command line interpreters have the advantage that the user may issue a lot of commands in a very terse and efficient way. The downside is that one has to know the commands and their parameters. The graphical user interfaces were an answer to this problem. However for certain complex tasks GUIs are more difficult to use than a command line interface, because of the large number of menus and dialog boxes presented, and therefore a well designed command line interface is easier to use.

Examples of command line interpreters (not actually well designed, but grown historically and intensively used)

the various Unix shell programs such as bash
command.com (MS-DOS, later versions of the Microsoft operating systems have command line interpreters with the same name but with more commands they can interpret)

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Command line interpreter".