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Comment by mmx1 | Hacker News Reader

Realistically anyone who cared would be using something like Cygwin (and the original UNIX server market segment evaporated due to Linux and had zero interest in migrating to NT in that form--some did migrate due to application layer benefits like .NET but not for the same workloads.)

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There is an alternative universe where Windows NT POSIX is really as it should have been in first place, and Linux never takes off as there is no need for it.

As there is another alternative one where Microsoft doesn't sell Xenix and keeps pushing for it, as Bill Gates was actually a big fan of.

Obviously we'll never know, but I seriously doubt that parallel universe would've had a chance to materialize. Not the least due to "free as in beer" aspect of Linux whilst web/Apache was growing at the pace it did. All proprietary unices are basically dead. Sun was likely the sole company that had the best attitude to live alongside open source, but they also proved it wasn't a good enough business post bubble burst. NT and Darwin remain alive due to their desktop use, not server.

NT underlies the majority of M365 and many of the major Azure services. Most F500s in the US will have at the very least an Active Directory deployment, if not other ancillary services.

IIS and SQL Server (Win) boxes are fairly typical, still.

I am not suggesting NT is dead on servers at all. I am positing it would be dead had it not been for owning the majority of desktops. Those use cases are primarily driven as an ancillary service to Windows desktop[1], and where they have wider applicability, like .NET and SQL Server, have been progressively unleashed from Windows. The realm of standalone server products were bulldozed by Linux; NT wouldn't have stood a chance either.

[1]: In fact, Active Directory was specifically targeted by EU antitrust lawsuit against Microsoft.

For all large corps, users sit at 1990s-style desktop computers that run Win10/11 and use Microsoft Office, including Outlook that connects to an Exchange server running on Windows Server. I'm not here to defend Microsoft operating systems (I much prefer Linux), but they are so deeply embedded. It might be decades before that changes at large corps.

That was true once, but not true now. On-prem Exchange is rapidly being squashed by Microsoft in favor of 365. The direction of travel for the Outlook client is clearly towards web (I note anecdotally that the Mac client, always a poor relation to Windows, is so laughably clunky that the Mac users I know forgo it in favor of the web client.) If the service is in the 365 cloud and the client is a web browser, who needs Windows for this discussion? We might end up in a future of terminals again for the worker bees and 'real' computers only for the people who need Excel and Word and for whom the web versions dont cut it

IBM z/OS is officially a Unix-a very weird Unix which uses EBCDIC-but it passed the test suite (an old but still valid version, which makes it somewhat outdated) and IBM paid the fee to The Open Group, so officially it is a Unix. (Although somewhat outdated, they recently added a partial emulation of the Linux namespace syscalls-clone/unshare/etc-in order to port K8S to z/OS; but that’s not part of the Unix standard.)

If Microsoft had wanted, Windows could have officially been Unix too-they could have licensed the test suite, run it under their POSIX/SFU/SUA subsystem, fixed the failures, paid the fee-and then Windows would be a Unix. They never did-not (as far as I’m aware) for any technical reason, simply because as a matter of business strategy, they decided not to invest in this.

With Microsoft having either Windows NT with proper UNIX support, or real UNIX with Xenix, there would be no need for Linux, regardless of it being free beer.

Whatever computer people would be getting at the local shopping mall computer store already had UNIX support.

Lets also not forget that UNIX and C won over the competing on timesharing OSes, exactly because AT&T wasn't allowed to sell it in first place, there was no Linux on those days, and had AT&T not sued BSD, hardly anyone would have paid attention to Linux, yet another what-if.

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