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UNIX V4 is back: I booted into the 1973 OS and it made me weirdly happy

I booted UNIX V4 (first C rewrite) in a PDP‑11 emulator. It feels tactile—no backspace, staggered print, slower typing, and ...
TechSpot

Lost Unix v4 source code from 1973 recovered from decades-old magnetic tape

Through the looking glass: A half-century-old magnetic tape containing the only known copy of Unix v4 has been found and recovered by the University of Utah's School of Computing. The nine-track 3M ...