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Unix versions from Bell Labs were designated by the edition of the user's manual with which they were accompanied. Released in 1979, the Seventh Edition was preceded by Sixth Edition, which was the first version licensed to commercial users. [1]
The first version of Unix was developed on a PDP-7 which was sitting around Bell Labs. In 1971 the developers wanted to get a PDP-11 for further work on the operating system. In order to justify the cost for this system, they proposed that they would implement a document-formatting system for the Bell Labs patents department. [1]
Columbus UNIX, or CB UNIX, is a discontinued variant of the UNIX operating system used internally at Bell Labs [1] for administrative databases and transaction processing. [2] It was developed at the Columbus, Ohio branch, based on V6, V7 and PWB Unix. [3] It was little-known outside the company.
Plan 9 from Bell Labs is a distributed operating system which originated from the Computing Science Research Center (CSRC) at Bell Labs in the mid-1980s and built on UNIX concepts first developed there in the late 1960s. Since 2000, Plan 9 has been free and open-source. The final official release was in early 2015.
[7] [8] [9] In 1959, together with Douglas E. Eastwood of Bell Labs, he introduced conditional and recursive macros into popular SAP assembler, [10] creating what is known as Macro SAP. [11] His 1960 paper was also seminal in the area of extending any (including high-level ) programming languages through macro processors.
The earliest distributions of Unix from Bell Labs in the 1970s included the source code to the operating system, allowing researchers at universities to modify and extend Unix. The operating system arrived at Berkeley in 1974, at the request of computer science professor Bob Fabry who had been on the program committee for the Symposium on ...
In the mid-1980s, work began at Bell Labs on a new operating system as a replacement for Unix. Thompson was instrumental in the design and implementation of the Plan 9 from Bell Labs , a new operating system utilizing principles of Unix, but applying them more broadly to all major system facilities.
The first system actually used at Bell Labs was BESYS-2. The system was resident on magnetic tape, and occupied the lowest 64 (36-bit) words and the highest 4K words of memory. The upper 4K words held the resident portion of the monitor, and could be partially swapped to magnetic drum to free up additional core for the user program if needed. [1]