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.

The OS X Terminal opens up a world of powerful UNIX utilities and scripts. If you're migrating from Linux, you'll find many familiar commands work the way you expect. But power users often aren't ...

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 ...

Topher, an avid Mac user for the past 15 years, has been a contributing author to MacFixIt since the spring of 2008. One of his passions is troubleshooting Mac problems and making the best use of Macs ...