Acronym for Graphical User Interface.
A GUI normally involves the WIMP paradigm (Windows, Icons, Mouse, Pointer) and provides a nice graphical (higher resolution) way of looking at data.
Purists use GUIs only to run multiple copies of xterm(1)
Compare with CommandLine.
GUI on Linux is provided by X(7)?, and any number of things on top of it.
82 pages link to GUI:
