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Columbus UNIX (or CB UNIX) was, according to Marc Rochkind[1], a variant of the UNIX operating system internal to Bell Labs. It was developed at the Columbus, Ohio branch and was little-known outside the company. CB UNIX was developed to address deficiencies inherent in Research Unix, notably the lack of interprocess communication and file locking, considered essential for a database management system. Several Bell System operation support system products were based on CB UNIX such as Switching_Control_Center_System. The primary innovations were power fail restart, line disciplines, terminal types, and IPC features similar to System V's messages and shared memory[2].
Volume 1 and Volume 2 of the UNIX Programmers Manual CB Version
[edit] See also
[edit] References
- ^ Rochkind, Marc (1985). Advanced UNIX Programming. Prentice Hall, 156-157. ISBN 0-13-011800-1.
- ^ Dale Dejager (January 16, 1984). "UNIX history". net.unix. [[1] (Web link)].
