sunos was the bsd-based sun operating system for 68k and sparc. solaris was the at&t based sun operating system for sparc and x86.
Solaris 2 and up were derived from System V release 4, which had actually merged the best of System V with both Xenix and BSD, so rather than being purely AT&T Unix, SVR4 was promised as the best of all worlds, with some ability to pick and choose which variety was in play, based somewhat on provision of both types of utilities in separate directories, and appropriate libraries and APIs.
SVR4, IMHO, was the best and most stable Unix, and the right choice for vendors to adopt in those days.
sun's pivot from bsd to at&t was a very nice and clean change (I was the one who ended up upgrading our sunos servers to solaris when the time came in the 90's), sequent's switch was a nightmare.
I still miss my e4500, though, but not the noise or electric bill.
Still true:
$ uname -sr
SunOS 5.11
Microsoft Windows [Version 10.0.22631.4169][1] Windows 95 also tells 16 bit apps that it's v3.95, but 32 bit apps get the correct 4.0.
(The Sun 386i didn't get SunOS 4.1 nor Solaris 2, at least not at our site, where we had a few sitting around in empty cubicles, and occasionally used for random things.)
oh gosh, I always forget about those, thanks! around here, it was mostly the 68k suns, followed by sparc. the 386 unix variants were mostly sequent.
I remember one fun job interview in the 90's, where before we went to grab beer the interviewer (my future boss) stopped in the office and said "and this will be your sparc" - to be quite honest, that was such a huge perk!
Incidentally, we were a Sun ISV and customer out in the Silicon Forest, where Sequent was located (and Intel, Tektronix...). I initially learned C++ and Smalltalk from an adjunct professor from Sequent. Also where Cray Research Superservers (nee FPS) was, who developed a multiprocessing SPARC system before Sun. Which is how, as a teen, I got sent by a marketing guy to onsite at Cray, to "port" some of our software to the Cray S-MP. It was a nice time and place, with a little like a mini version of being in Silicon Valley, but with more rain.
I also spent a lot of time in the old sequent campus, at the OSDL, and a bunch of time at OGI before it got subsumed.
I still remember the day when Microsoft visited the office, saw I had a Microsoft keyboard connected to my sparc, and asked if I ran internet explorer (they had a solaris version). I laughed and said, "no, I only have 96mb of ram, you can't run internet explorer in only 96mb of ram".
Also in the OGI science park was Verdix (makers of Ada development tools, and some kind of multilevel-secure workstation software).
I don't know what all the other companies were. But amenities included private showers for biking to work, a small forest jogging trail, and a restaurant that made nice turkey sandwiches and huge blueberry muffins to replenish those calories.
the ISP was founded by a mixture of ex-intel and ex-ogi telecom, so there was always a bit of closeness there.
eventually, at the OSDL, we had a Fred Meyer across the street, and not much else. but damnit, we had a great raised floor datacenter!
Oral History of Grant Saviers, part 2 of 2 https://www.youtube.com/watch?v=Od830KDrLUU
Oral History of Grant Saviers part 1: http://archive.computerhistory.org/resources/access/text/201...
Oral History of Grant Saviers part 2: https://archive.computerhistory.org/resources/access/text/20...
'As DEC’s Corporate Vice President of PC Systems and Peripherals from 1990 to 1992 Grant successfully restarted DEC’s PC business from a dormant state and grew revenues to $350M and break-even profitability in 18 months.'
@18 minute timestamp - they copied DELL strategy and did pretty good, business was growing and then DEC founder and CEO Ken Olsen decided to kill it. Grant got recruited to lead Adaptec.
The SunOS -> Solaris transition is an important piece of Sun history.
It really is an incredibly important part of Unix history, not just Sun. It basically really started the outright Unix wars. Had Sun just gone with BSD and tried to create that as a standard, they could have taken most of the world with them without creating a massive blowback counter-reaction that their alliance with AT&T provoked.
And AT&T would have been dead in the water, they might have tried with somebody else, but that would have just cast Sun as the good guys and AT&T and whoever as the bad guys and with Sun already being the market leader, that standard would have been pretty dominant I would think.
I think it was mostly that he liked the bsd tooling over the at&t tooling, but it instilled so much in me that I still have a hard time remembering the gnu command line options: I tend to default to svr4, then to bsd, and finally to gnu. probably one of the reasons I still feel at home on macOS.