High Quality Content by WIKIPEDIA articles! Eighth Edition Unix, also known as Version 8 Unix or V8, was a version of the Research Unix operating system developed and used internally at Bell Labs and a select number of universities. It was "released" in February 1985, ran on VAX hardware, and was a variant of 4.1cBSD with some System V.1 (SVR2) features (notably the shell). V8 was the successor to V7 and the predecessor to V9. V8 is perhaps best remembered for its regular expression (RE) matching library, which established a de facto standard for RE syntax until a POSIX standard was developed. It also introduced the STREAMS I/O mechanism, the /proc filesystem, kernel support for interpreter directives, and several other features later incorporated into System V.2 (SVR3) and subsequent versions of Unix.

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