GCOS is a quick-and-dirty clone of System/360 DOS that emerged from GE around 1970. Originally it was called GECOS (the General Electric Comprehensive Operating System). Later it was changed to support primitive timesharing and transaction processing. After the buyout of GE's computer division by Honeywell, the name was changed to General Comprehen... Found on http://www.probertencyclopaedia.com/browse/GG.HTM