[TUHS] Shell control through external commands

Marc Rochkind rochkind at basepath.com
Fri Jul 15 09:27:21 AEST 2016

Thought I'd mention here that the OP was asking about the original shell,
and that the Mashey and Bourne shells were much newer than that.

On Thu, Jul 14, 2016 at 4:49 PM, Peter Jeremy <peter at rulingia.com> wrote:

> On 2016-Jul-15 08:36:56 +1000, Dave Horsfall <dave at horsfall.org> wrote:
> >On Thu, 14 Jul 2016, Clem Cole wrote:
> >> Could you be confusing the fact the true and false were implemented by
> >> external commands in some early shell's
> I was always amused by AT&T adding a multi-kB copyright notice to what
> had previously been an empty file.
> >And on the Mac and FreeBSD, they still are (as well as being builtins).
> FreeBSD provides a convenient list of what commands are (currently) builtin
> to the provided shells and available externally:
> https://www.freebsd.org/cgi/man.cgi?builtin
> --
> Peter Jeremy
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