> This lets
you execute commands like:
>
> auth/as
...
POSIX forbids this behavior, FWIW, so you'll probably have a hard time
finding a shell -- at least one with POSIX aspirations
-- that implements
it.
So you write a function or alias that prepends the full path to "as" and
exec's the command. So you have to type "auth as ..." but BFD.