Windows. MacOS. Gnome. GUIs (Graphical user interfaces) have been the mainstay of home and office computers for nearly 25 years. Before that there were DOS and the Unix command lines. For most users, the mouse and the attractive, colorful user interfaces offered were more intuitive and easier to learn that the cryptic keyboard commands needed to do most tasks on text-based interfaces. For most people, GUIs are still the best way to go. Still, many...