> Would this make Linux the first *NIX-based OS that is written in a language other than C? At least, with high usage... It depends, but it's certainly not the

> Would this make Linux the first *NIX-based OS that is written in a language other than C? At least, with high usage... It depends, but it's certainly not the first POSIX implementation in some high level language other than C. For example: * Real-Time Executive for Multiprocessor Systems (RTEMS) is a real-time operating system (RTOS) designed for embedded systems. While it's often compiled down to as slim-as-possible it does support POSIX, and it's written in Ada. It's been used in a lot of projects, but because it's really an RTOS, RTEMS is typically embedded within dedicated systems and not something you'd normally interact with directly. https://en.wikipedia.org/wiki/RTEMS https://en.wikipedia.org/wiki/RTEMS * The BiiN system had an operating system written in Ada, and I think it implemented most of POSIX. However, the BiiN hardware never sold well, so it disappeared. I can't even find much about it on the web. * BeOS implemented a lot of POSIX, and it was mostly C++. Haiku re-implements much of BeOS and is also written mostly in C++.