Invisible <voi### [at] devnull> wrote:
> Depends how you define "kernel".

> How different is MacOS? Is it just a typical Unix environment with a 
> different UI shell running on top? Or is it more fundamentally different 
> than that under the hood?

  It is quite different from typical unix systems. For example, it
implements many file system features (such as metadata) that typical
unix systems don't have. Also the windowing system is its own entity
and has nothing to do with unix.

  Of course the great thing is that you *can* compile and run most unix
programs in it if you want. IIRC it can even emulate the X windowing system
so you can run graphical unix programs as well.

-- 
                                                          - Warp

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