Happy Birthday Unix Nov 3, 1971 The first edition of Unix was released on November 3, 1971, with D.M. Ritchie and K. Thompson working on the first edition of the Unix Programmer's Manual, which included over 60 commands.
https://files.mastodon.social/media_attachments/files/113/418/082/787/773/238/original/d9772e60546c8af7.png