An operating system that is directed by entering text commands. DOS is an example of a widely used command line operating system. See DOS and command line. THIS DEFINITION IS FOR PERSONAL USE ONLY.

Windows, Microsoft, and third-party software makers supply numerous useful tools for the command line — but these are not always easy to use. Graphical user interfaces (GUI), on the other hand, ...

MS-DOS or Microsoft Disk Operating System was the dominant operating system for Personal Computer throughout the 80s. MS-DOS is a non-graphical command line operating system. MS-DOS allows the user to ...