386BSD port:

The second article in the "PORTING UNIX TO THE 386" series discussed the utilities we had to build to test the port on an actual 80386 PC.
By far, the most popular article.

First thing the kernel does is open its root filesystem - so we need a way to write a filesystem onto the hard disk, adjacent to the DOS filesystem, which is what this utility does.

Synopsis of what 386BSD was intended to be in the 1989-1990 timeframe.

What should have happened was that Berkeley should have released a basic 386 system binary and source release, and followed it up with a general release.

This, the first article, is the first published mention of 386BSD. By this time, the project had been operational for 18 months, and William Jolitz was at Berkeley working on the Net/2 release.
In this installment, we discussed the beginning of our project and the initial framework that guided our efforts, in particular, the development of the 386BSD specification.

With cross tools we could make utility programs for our nascent system. The next step would be incorporating them into a filesystem so that they could run on the native 386, with the kernel program.