my question: "Why linux only?"
There are many other unix-like systems like freebsd & openbsd ... and others...
You can choose most famous distros such as RedHat or Mandrake...
But the main in all unix-likeOS is console... & console is the same in all of linuxes...
![Smilie Smilie](https://www.unix.com/images/smilies/smile.gif)