Does Mac OS X use Linux?

Question

The title says it all. At my job I've been asked to install a Ubuntu Linux system on a Virtualbox among other things so I can ssh into a development environment. This got me wondering about Operating Systems. I understand that Apple's is Mac OS X, but I just want to know if Mac OS X uses Linux or not. In August, I'm thinking of signing up for a Linux class on Edx.org so I can get better with the command line. I want to know if it will be a waste of time or not.

I've already looked up the history of Linux, Looked it up on Wikipedia, and googled it but surprisingly I didn't find an answer to this question. So once again, does Mac use Linux?

Answer 1

Mac OSX is built on top of BSD. http://en.wikipedia.org/wiki/OS_X

Linux classes, in my opinion, are just fine and would enable you to be comfortable with the command line. The caveat is that there are differences such as the output or availability or options of commands. Instance is "ps". The system libraries, the folder structure are also different. Also note if you ever work on a *NIX server machine, invariably that would be linux. Note, there are no OSX servers anymore.