And /dev/tcp does not exist in Unix. Neither does /dev/draw. Everything is a file broke in Unix in the '80s when sockets and X windows came. Original Unix' dev

And /dev/tcp does not exist in Unix. Neither does /dev/draw. Everything is a file broke in Unix in the '80s when sockets and X windows came. Original Unix' developers tried (and succeeded, IMO) to fix these problems and created Plan9. In Plan9 all I/O, being regular I/O, GUI applications, networking etc are done through the namespace. Unix means two things today, one is a useless certification, usually referred as UNIX and the other one is a loose set of tools, ideas and encompassing practices. Mac OS X fits both these definitions.