(15-01-2017, 11:32 PM)jkl Wrote: Unix was not exactly Multics's successor. It remains unclear if the Unix team even had the rights to rewrite "something like Multics" when they started.

You are right, but I didn't know how to put that into words for the podcast. "Inspired by" doesn't even cut it even though some part indeed were, like the shell in this case.

(15-01-2017, 11:32 PM)jkl Wrote: The fact that ksh was "opened" quite late did not stop its success as its language has been widely adapted by then. Concerning root shells, the csh (or TENEX csh) is probably even less common, FreeBSD uses the Almquist shell (like NetBSD does AFAIR).

Probably related: ksh adaption list.
[url=http://www.in-ulm.de/~mascheck/various/shells/ksh_versions.html[/url]

Thanks for pointing those out.

Though,
http://www.bsdnewsletter.com/bsda-book/C...shell.html

But NetBSD uses the Bourne shell as a user shell since version 4.0:
http://www.netbsd.org/docs/misc/
But historically used csh (but it doesn't mention its root shell).

And this,
http://www.in-ulm.de/~mascheck/various/shells/
which points that many BSDs use csh as the root shell by default.

I truly appreciate the time you spend to correct the mistakes and the added info.