Thread: Mac OS and iPhone OS based on the linux kernel?
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dalonso is offline dalonso
2010-05-03 , 11:42
Posts: 87 | Thanked: 47 times | Joined on Sep 2009 @ Sorocaba, Brasil
#5
Originally Posted by mrebanza View Post
but LINUX was based on UNIX as an open source and free alternative . . . UNIX is basically a commercial version of Linux . . .
No, you are wrong. Indeed, your quote of wikipedia says nothing about UNIX being a commercial version o Linux. It says "unix-like".

In fact, Linux means "Linux is not Unix".

UNIX is not really an operating system: It could better be understood as a set of tools which names, options and behaviours must be respected in order for an Operating System being called of Unix flavour.

Solaris is a Unix flavour, BSD is a Unix flavour, MacOS X is a Unix flavour, SCO is/was a Unix flavour.

Linux+GNU tools is not a Unix flavour, as it has never been certified as so. It's more of an "emulator" that tries to be compliant to Unix but without being Unix.