If they're extinct, can you really say they "survived"?
Do you not use light bulbs in the summer? Or do you just not have summer in Wisconsin?
Well, based on Mach 2.5, which contained BSD 4.4 and Mach kernel code.
Google development is done on Linux but Mac laptops at Google run MacOS. Laptops (or chromebooks, there's a mix of both) aren't used for development (except via ssh, etc); they are used for email, web, etc.
> IIRC Google has more of the latter and fewer of the former.
Yes, you are correct. More details here:
"The best projects will have a very high number of independent work units, a high CPU to I/O ratio, and no inter-process communication (commonly described as Embarrassingly or Pleasantly Parallel). The higher the CPU to I/O rate, the better the match with the system. Programs must be developed in C/C++ and compiled via Native Client. Awardees will be able to consult an on-site engineering team."
Native Client: http://en.wikipedia.org/wiki/Google_Native_Client