I think you misspelled "40 years ago". By 1994, GUIs were common on workstations, and hardware-based serial terminals were disappearing fast. OTOH, the comman

I think you misspelled "40 years ago". By 1994, GUIs were common on workstations, and hardware-based serial terminals were disappearing fast. OTOH, the command line as a UI paradigm is alive and well today and might well be around for another 20 or 40 years.