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0 pointsteddyh1y ago0 comments

No, macOS is FreeBSD, not the Unix from Bell Labs.

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macOS is many things, a bit of NeXTSTEP, a pinch of Mach, q.b. BSD, and a UNIX™ certification from OpenGroup.

A UNIX™ certification is not the same as being actual code from Unix™.

NeXTSTEP was 4.3BSD plus Mach, using Display Postscript as its windowing system and TIFF as its image format, supporting transparency for icons. macOS is FreeBSD plus Mach, using Display PDF as its windowing format and PNG as its image format, supporting transparency for icons. Basically NeXTSTEP but every component upgraded to its then-modern equivalent. (Except Objective C, they kept that.)

pjmlp1y ago

Where do you mention Unix™ is the original source code, and not UNIX™ as defined by OpenGroup, the owners of UNIX™?

> Bell Labs did the same with Unix, but Unix was still not open source. This is why we run GNU/Linux today, not Unix™.

I know pretty well how NeXTSTEP used to be, my graduation project was to port a visualization framework from NeXTSTEP/Objective-C to Windows/C++.

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pjmlp1y ago

macOS is many things, a bit of NeXTSTEP, a pinch of Mach, q.b. BSD, and a UNIX™ certification from OpenGroup.

teddyhOP1y ago

A UNIX™ certification is not the same as being actual code from Unix™.

pjmlp1y ago

Where do you mention Unix™ is the original source code, and not UNIX™ as defined by OpenGroup, the owners of UNIX™?

> Bell Labs did the same with Unix, but Unix was still not open source. This is why we run GNU/Linux today, not Unix™.

I know pretty well how NeXTSTEP used to be, my graduation project was to port a visualization framework from NeXTSTEP/Objective-C to Windows/C++.

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