Ian McWilliam <i.mcwill...@westernsydney.edu.au> wrote: > Isn't Unix a trademark of the Open Group? Hence the usage of Unix-like or > Un*x..
That trademark is UNIX, all caps. According to [APUEv3]: "The Open Group owns the UNIX trademark and uses the Single UNIX Specification to define the interfaces an implementation must support to call itself a UNIX system. Vendors must file conformance statements, pass test suites to verify conformance, and license the right to use the UNIX trademark." For example, Mac OS X 10.5 and other big commercial brands have been [certified] and may call themselves a UNIX system (again, the all caps variant is significant here). [APUEv3] Advanced Programming in the UNIX Environment Third Edition p30 [certified] https://www.opengroup.org/certifications/unix
