Also, to be pedantic, apple is a BSD, not a linux.

meruru · on June 16, 2019

Mac OS is its own operating system with its own kernel. It's neither Linux nor BSD.

dnautics · on June 16, 2019

oh good point, TIL only the posix and syscall layer is BSD. nonetheless it's not at all a linux.

pjmlp · on June 16, 2019

If you want to see how much different they are, have a look at

"Mac OS X Internals: A Systems Approach"

Since then, has macOS become even further away from BSD, with its own Network stack, XPC, SIP and many other architecture changes.

mailslot · on June 16, 2019

It’s a certified UNIX, which Linux & BSD are clones of (UNIX).

cat199 · on June 16, 2019

this is taking the post USL vs BSD legalized definition of unix, which, w/r/t history, is revisionist.

following the lineage and where active development happened at the time (80s/early 90s), one can easily make the case that BSD is unix.

dTal · on June 16, 2019

To be pedantic, Apple is a company, not an OS :)

tssva · on June 17, 2019

To be pedantic, the comment you replied to referred to apple which is neither a company nor an OS but a fruit.