[Mannaggia l'America]

A brief reading of OS history has VMS having relatively common roots with Unix. You can look it up.

I don't know about VMS having a lot in common with Unix.

But Windows NT (and therefore 2000, XP, and 2003) has some common roots with VMS.

The architect of Windows NT was Dave Cutler, who happens to also be the architect of VMS. Gates hired Cutler after he left DEC. There used to be a book available on Windows NT internals that points out the things the two OS's have in common.

Here's an article about the history.

[Revolting cat!]

NT and its descendants to this day have been what I call VMS in a hurry! No command line interface (MS DOS? You've got to be kidding), no multi-version file system, no batch processing ability, no multi-user access and so on. Bring back VMS, please!

[Havoc]

NT stole liberally from IBM's OS/2. And that is largely what it was crafted on. Whatever else they did to attempt to model other parts after VMS isn't surprising; but, I wouldn't say it's based on VMS.