GECOS (operating system)
GECOS ( G eneral E lectric C omprehensive O perating S ystem ) refers to an operating system , that of General Electric from 1962 to 1964 for the 36-bit mainframe GE-635 was developed. Contrary to rumor, this was not a clone of IBM's System / 360 . The architecture of the GE-635 was different in comparison and GECOS was far more demanding than IBM's OS / 360 operating system . Second generation features in 1968 included support for time-sharing and batch processing . After the computer division was sold to Honeywell in 1970, GECOS was renamed GCOS .
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A data field in the / etc / passwd file on Unix operating systems in which no system-relevant information about the user is stored, e.g. B. First and last name is also referred to as GECOS. The name of the field refers to the General Electric operating system, so it does not stand for its own abbreviation. The GECOS field was added at Bell Labs in 1970 to allow one UNIX system to communicate with the other computers using the General Electric Comprehensive Operating System . The GECOS field is now also referred to as the name field , since it often only contains the name .