ProfessorRobert Ricci believes only 20 copies were ever produced of the version of Unix on that tape. ... The newUNIX operating system would've been announced at conferences in the early 1970s, and a U.
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 tape found at the University of Utah last month ... .
The version of Unix recovered seems to have some (but not all) of the commands that later appeared in Unix v5, according to discussion on social media. "UNIX wasn't versioned as we know it today," ...