"What we do know is that Unix was conceived in the spring of '69
and gestated over the summer months with a team at Bell Labs
Computing Science Research Center that included Ken Thompson and
"Not for them the sort of ponderous development schedules coders
at Microsoft enjoyed: While Windows Vista took several years to
develop from initial idea to finished product, the fathers of Unix
worked to a different beat altogether. How's this for a confident
approach to developing what may be the most important operating
system the world has ever seen: "I allocated a week each to the
operating system, the shell, the editor, and the assembler to
reproduce itself ..." Thompson explains.
"And so, 40 years ago, something came in to existence. "Although
it was not until well into 1970 that Brian Kernighan suggested the
name 'UNIX,' in a somewhat treacherous pun on 'Multics,'[and] the
operating system we know today was born," confirms Ritchie."