If you used DOS, you must have had Norton Commander on your machine, which was the first orthodox file manager. The first version was released in 1986.
Today I learned that there exists Norton Commando too, which was a British made motorcycle with a twin cylinder engine, produced by the Norton Motorcycle company. During the ten years it was in production it was popular all over the world. In the United Kingdom it won the MCN “Machine of the Year” competition for five successive years from 1968-1972. Some regard it as the British Motorcycle Industry’s swan song, selling well from its introduction in 1967 through the end of the British bike industry as a commercial concern in the mid 1970s. (from wikipedia)