[TUHS] Shell control through external commands

[Random832]

On Thu, Jul 14, 2016, at 23:59, Dave Horsfall wrote:
> On Thu, 14 Jul 2016, Random832 wrote:
> 
> > My Mac even has /usr/bin/cd.
> 
> After which, of course, the shell returns to where it was...  Or does
> it do a getcwd() after each command or something?

The existence of cd as a real command is a bit silly (Ubuntu doesn't
seem to bother with it), but it is technically required by the standard.