This is also very much like the pick operating system, currently the biggest multivalue operating systems are UniVerse, UniData and D3. If you want to try them out, look into scarletdme. The multivalue style is a total mind bend at the beginning!
I like the more modern stuff I work with now, but I truly miss the multivalue world some days.
Every once in a while I install the UniVerse personal edition and build something for fun. I will definitely check out scarletdme!
A quick guide to getting started with scarletdme: https://nivethan.dev/devlog/scarletdme.html
Unfortunately I never ported my editor and shell to scarletdme so this will be UniVerse/UD/D3 specific:
An editor like vim: https://github.com/Krowemoh/eva
A fish like shell: https://github.com/Krowemoh/nsh
scarletdme in the browser(this will be a 500mb download as it runs debian under v86.js): https://nivethan.dev/projects/v86/scarlet.html
The two things I do to start playing in a new MV environment both worked exactly as I hoped they would:
LIST VOC
ED BP BLAH
I
PRINT "THIS IS A TEST"
FIBR
I definitely need to set this up and seriously play with it! I periodically download a new copy of UniVerse PE to play with, but this is something I could actually do real work in.
Believe it or not, I actually like working in ED and/or AE.
At one point (back in the UniVerse job), I wrote my own shell. It was basically a REPL that passed whatever you typed to EXEC, except for one nifty trick. The trick was that there were two REPLs in the program - one which worked normally, the other executed within a BEGIN TRANSACTION/END TRANSACTION block and had commands to commit and rollback. Having two REPLs was a concession to get it to even compile because BASIC required that BEGIN TRANSACTION and END TRANSACTION form a block, you couldn't just arbitrarily call those commands. I didn't even bother building a history mechanism, it was literally just a REPL that could work within the context of a transaction. It was incredibly useful.
Honestly the best programmers are out here using ED. 0 syntax highlighting and you can only see 40-60 lines at a time. Insanity.
There is a 64bit version of scarletdme in the dev branch and the instructions are the same, it should work on both debian and centos.