cmd: fixing an issue with extra whitespaces after cd parameter (retry)

[Dan Kegel]

Frédéric Delanoy wote:
> Nowres Rafid wrote:
>> how can I generate the expected file (.exp)?
> It already exists in the source tree

I think Nowres meant, how can he update the .exp file
to match the expected output of his new test.

The answer is: run the new test, save its output,
and add it to the .exp file by hand.  It's kind of a pain.