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Linux really has come a long way
(lemmy.dbzer0.com)
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
Also the various BSD-based OSs. FreeBSD, OpenBSD, NetBSD etc. are still around, and MacOS is based on BSD too. And since BSD (1978) is a Unix, you can trace these all the way back to 1969.
That's kind of true, but MacOS and Mac OSX are 2 different things. What is based on BSD is the MAC OSX that came out in 2001 AFAIK.
And BSD was interrupted for 2 years because of copyright disputes with AT&T. If that hadn't happened, BSD would be the longest continuous OS today, and probably way more significant than it is.
I don't consider MAC OSX as part of BSD, just like Android isn't part of Linux Desktop, but only uses the Linux kernel. OSX took parts of BSD and shielded it behind a proprietary wall, because the BSD license offer no protection from that. So they become separate projects the moment they enter the Apple domain.
Problem here is when people mix up the use of the word Linux as an OS with Linux the kernel. I am 100% sure OP meant Linux as a Desktop OS like GNU/Linux or something like Free desktop according to freedesktop.org. Using his experience with EndeavorOS as an example.
But you are right, it can be said Unix/BSD has an even longer running time, but it has been somewhat problematic and interrupted because of AT&T and SCO and Novell.
Then Windows 3.0 and Windows 11 are two different things, so by that metric you can't include Windows either.
Good catch, I guess that's mostly true, but Windows NT was an evolution of Windows that mainly got rid of the DOS legacy. Which after Windows NT ran on a compatibility layer, where Windows 3 ran on DOS directly.
It's a bit of a grey area. But I'd say windows NT was a continuation of Windows that shared almost the entire API from Windows 3.0.
The old "System n" OS was also called MAC OS. And the switch to OSX was a completely new OS where the old MAC OS software ran on a compatibility layer.
I guess it can be seen either way.