Desktops, Windows, and Applications
Paul S. Wang · 2010
In the beginning, Linux/UNIX systems were used exclusively through the command-line interface (CLI) (Chapter 2). A graphical user interface (GUI) employs a pixel-based graphical display and a pointing device such as a mouse, in addition to the keyboard, to interact with the user. The first effective GUI on an affordable personal computer1 was introduced by the Apple Lisa in the early 1980s.