At the risk of dating myself, I cut my teeth on MS-DOS (after moving on from the Commodore 64, that is), the command-line interface operating system that predated Windows. MS-DOS first arrived in the early 1980s, nearly four decades ago, with the most recent (and final) version hitting the scene 18 years ago. For those who are curious, or

Source: Hot Hardware – Microsoft’s MS-DOS Goes Open Source Three Decades After Release, Heads To GitHub