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UNIX V4 tape successfully recovered: First ever version of UNIX written in C is running again

Crucial early evolutionary step found, imaged, and ... amazingly ... works Computer History Museum software curator Al Kossow has successfully retrieved the contents of the over-half-a-century old ...
How-To Geek on MSN

52 years later, UNIX V4 has been rediscovered and digitized

Linux, macOS, FreeBSD, Android, and other operating systems can trace their lineage back to the early commercial versions of ...