3 ms·

M/PC – A Concatenative OS

benj111 3mo ago
Is this not more of a shell than an os? Nevertheless an interesting idea. Unix pipes are basically concatenative, I've often thought how much mileage you could get out of going more in this direction. Having said that. This has a lot of forth in it. (Dup, over, rot) I'm not sure the forth way, of passing options in the stack would necessarily work so well in a shell.
- quotemstr 3mo ago
  It kind of asks "What if we built an OS, but with all data sourced from immutable, append-only logs processed by pure functios?" Probably not literally realizable right now, but IMHO, the closer we can get, the better
  - avadodin 3mo ago
    You could easily make CUNIX by starting with a log containing the state of a PDP11 at boot and a pure function which appends ignore previous input and the next PDP11 state to it.
- photios 3mo ago
  > Unix pipes are basically concatenative, I've often thought how much mileage you could get out of going more in this direction. You might enjoy the "Shell Has a Forth-like Quality" article. It's changed my shell scripting a lot. https://www.oilshell.org/blog/2017/01/13.html https://www.oilshell.org/blog/2017/01/13.html
MrEricSir 3mo ago
Not to be confused with MPC, apparently: https://en.wikipedia.org/wiki/Multimedia_PC https://en.wikipedia.org/wiki/Multimedia_PC
f47204 3mo ago
maybe I am dumb, but I don't really get how this is different to just piping between commands?
- deleted 3mo ago
  [deleted]
- ux266478 3mo ago
  It's more than just a grammar. But specifically on that note, I'm assuming you know a POSIX Shell language. Spend some time with Forth and ask yourself if these are experientially the same thing. Equifinality is extremely misleading.
chirsz 3mo ago
Does this name come from reversing "CP/M"?
- entaloneralie 3mo ago
  It does :) It's CP/M commands(era, ren, etc..) except they work in postfix instead of infix.
mtdewcmu 3mo ago
Looks like the hardware this runs on has only 64 KB RAM.
sph 3mo ago
Great work as usual. I wish I were half as productive as Devine Lu Linvega. Perhaps I should get a sailboat and spend my time hacking without distraction, but I am not a fan of the seas.
veltas 3mo ago
They've been putting interesting update screenshots on fediverse recently: https://merveilles.town/@neauoire/116823589548151098 https://merveilles.town/@neauoire/116823589548151098

Is this not more of a shell than an os? Nevertheless an interesting idea. Unix pipes are basically concatenative, I've often thought how much mileage you could get out of going more in this direction. Having said that. This has a lot of forth in it. (Dup, over, rot) I'm not sure the forth way, of passing options in the stack would necessarily work so well in a shell.

quotemstr 3mo ago
It kind of asks "What if we built an OS, but with all data sourced from immutable, append-only logs processed by pure functios?" Probably not literally realizable right now, but IMHO, the closer we can get, the better
- avadodin 3mo ago
  You could easily make CUNIX by starting with a log containing the state of a PDP11 at boot and a pure function which appends ignore previous input and the next PDP11 state to it.
photios 3mo ago
> Unix pipes are basically concatenative, I've often thought how much mileage you could get out of going more in this direction. You might enjoy the "Shell Has a Forth-like Quality" article. It's changed my shell scripting a lot. https://www.oilshell.org/blog/2017/01/13.html https://www.oilshell.org/blog/2017/01/13.html

MrEricSir 3mo ago

Not to be confused with MPC, apparently: https://en.wikipedia.org/wiki/Multimedia_PC https://en.wikipedia.org/wiki/Multimedia_PC

f47204 3mo ago

maybe I am dumb, but I don't really get how this is different to just piping between commands?

deleted 3mo ago
[deleted]
ux266478 3mo ago
It's more than just a grammar. But specifically on that note, I'm assuming you know a POSIX Shell language. Spend some time with Forth and ask yourself if these are experientially the same thing. Equifinality is extremely misleading.

chirsz 3mo ago

Does this name come from reversing "CP/M"?

entaloneralie 3mo ago
It does :) It's CP/M commands(era, ren, etc..) except they work in postfix instead of infix.

mtdewcmu 3mo ago

Looks like the hardware this runs on has only 64 KB RAM.

sph 3mo ago

Great work as usual. I wish I were half as productive as Devine Lu Linvega. Perhaps I should get a sailboat and spend my time hacking without distraction, but I am not a fan of the seas.

veltas 3mo ago

They've been putting interesting update screenshots on fediverse recently: https://merveilles.town/@neauoire/116823589548151098 https://merveilles.town/@neauoire/116823589548151098