UNIX is the predecessor to Linux/BSD and was created at Bell laboratories. Also C was created there.
https://en.wikipedia.org/wiki/History_of_Unix https://en.wikipedia.org/wiki/Unix_philosophy https://en.wikipedia.org/wiki/C_%28programming_language%29
"Make each program do one thing well. To do a new job, build afresh rather than complicate old programs by adding new "features"."
One could say Micro services is a form that, do one thing and do it well.