Linux vs Unix: How do they differ
While Linux is not Unix, I often find that people wonder what the differences between Linux and Unix are. I'm guilty of that too, as I was unsure of the relationship between the two up until a couple of years ago when I finally sat down and read into it. The short story is that Linux is derived from Unix and is a continuation of Unix design, but in itself is not Unix.
There's a long and storied history between the two, and it's extremely difficult to actually find a lot of information on the early days of both systems in context to each other, thanks to many sources being lost to the passage of time. We've done the best we can to dig up as much as possible, as nowadays, the differences are surprisingly slim.