Lately it quacks like a goose. And microsoft is embracing it so it may loose its feders
And considering that this article is about evolution, this change in sound should be mentioned
What is a duck without feathers and quacking like a goose? A penguin?
Tue, we trace the evolution of the Unix code along the line that currently is FreeBSD over 50 years. The Linux kernel started its life decades later than Unix and it didn't (initially) share any code with the original Unix code base. Furthermore the GNU and other programs and tools required to form a GNU/Linux distribution have their own separate history, further complicating the picture. Linux's evolution, though shorter, is also interesting, but it is a very different story.
Well BSD is a true Unix. Personally I feel like it's appropriate that Linux isn't included here.