I'm sure they do, but decent version on some of these ancient systems would be... challenging. I've worked at a company that uses some pretty ancient hardware (

I'm sure they do, but decent version on some of these ancient systems would be... challenging. I've worked at a company that uses some pretty ancient hardware (emulated these days) for which I think there is a git client, but I don't think it works so well, so they used some equally ancient version control system.