XV6 changes: a BSD run-time

[DoctorWkt]

Hi all, I've spent a bit of time adding a set of BSD libraries and user-mode programs to the xv6 operating system. The kernel is nice and small, which helps with learning the core kernel concepts. But the existing run-time is too tiny, so I've got the essential Unix tools up and running.

Here's a quick video on xv6 and my changes: https://www.youtube.com/watch?v=QBuB7RYZYmQ

Repositories:

• https://github.com/mit-pdos/xv6-public, original xv6
• https://github.com/DoctorWkt/xv6-freebsd, my changes

Cheers, Warren