https://www.bell-labs.com/var/articles/celebrating-50-years-unix/
The summer of 1969 was one of the most culturally significant times in modern American history. It was the summer when Neil Armstrong landed on the moon, more than 400,000 people attended the legendary Woodstock music festival, and the Stonewall riots brought the fight for gay rights to the national stage.
However, something else happened that summer which you won’t find in most history books… a Bell Labs researcher named Ken Thompson created the first version of Unix, which turned out to be one of the most important pieces of computer software ever invented.