I'm not old enough to experience UNIX in mid 80/90s. By reading various stories and hear some anecdotes, seems that UNIX is a nice bandwagon for C. Except clas

I'm not old enough to experience UNIX in mid 80/90s. By reading various stories and hear some anecdotes, seems that UNIX is a nice bandwagon for C. Except classic MacOS, Pascal wasn't that popular for system programming. The culture still survive until today. Try searching at OSDev forum or Github, and you'll see most kernel projects are done in C.