[f2f]

the article mentions plan9 but says that it left a lot to be desired due to unstructured text input/output interface.

i want to note that Inferno, the other OS that came from Bell-Labs in the 90s did have a typed shell called alphabet:

http://www.vitanuova.com/inferno/man/1/sh-alphabet.html

mayhaps you'll find this interesting.

[Bystroushaak]

I've come across this several times in the past, but never paid too much attention to it. I'll check it again. Thanks.