>I have a copy of Byte magazine with the front cover that says “Is Unix dead?”.
For practical purposes it is. Bur it's not Windows NT that killed it, it's Linux.
For practical purposes it is. Bur it's not Windows NT that killed it, it's Linux.
The actually reality is POSIX flavoured OSes are most widely used operating systems in the world, for various levels of what means to be POSIX, and to what level they expose it.
"Transcending POSIX: The End of an Era?"
https://www.usenix.org/publications/loginonline/transcending...
Additionly Darwin evolved from a mix of BSD and MACH.
NeXTSTEP drivers were written in Objective-C, and a C++ subset on Darwin.
In any case you won't be running CLI applications on iOS, rather applications that depend on a mix of Objective-C and nowadays also Swift, hardly UNIX.
Using BSD sockets on iOS doesn't support all the iOS networking capabilities, for example.
NeXT approach, later adopted by Apple, was similar to Windows NT POSIX in spirit.
The UNIX compatibility is there to help bring applications into the platform, and take place in US government contracts, not to make it easier to port applications elsewhere.
There are even some recordings from meetings at NeXT, with Steve Jobs discussing how NeXT should position itself on the workstation market.