Yup. It is all about paying the price, Microsoft could technically get Windows certified as UNIX. IBM did just that with its mainframe OS. Here’s a list of certified UNIX systems: https://www.opengroup.org/openbrand/register/
Microsoft could technically get Windows certified as UNIX.
I don’t think they could now that the POSIX subsystem and Windows Services for UNIX are both gone. Don’t you need at least some level of POSIX compliance (at least the parts where POSIX and Unix standards overlap) to get Unix certified?
But OS X, macOS, and at least one Linux distro are/were UNIX certified.
Yup. It is all about paying the price, Microsoft could technically get Windows certified as UNIX. IBM did just that with its mainframe OS. Here’s a list of certified UNIX systems: https://www.opengroup.org/openbrand/register/
I don’t think they could now that the POSIX subsystem and Windows Services for UNIX are both gone. Don’t you need at least some level of POSIX compliance (at least the parts where POSIX and Unix standards overlap) to get Unix certified?