I think what you mean is that OS X is in the family tree of Linux, but it's more like an estranged third cousin. > It is a Unix-based operating system > macOS

I think what you mean is that OS X is in the family tree of Linux, but it's more like an estranged third cousin. > It is a Unix-based operating system > macOS makes use of the BSD codebase and the XNU kernel,[14] and its core set of components is based upon Apple's open source Darwin operating system. [0] https://en.wikipedia.org/wiki/Mac_operating_systems https://en.wikipedia.org/wiki/Mac_operating_systems