[colug-432] show path stuff

[R P Herrold]

On Fri, 30 Oct 2015, Jeff Frontz wrote:

> That's tricky, right?  The parent of a given directory might not actually
> be the same as dirname(1) on the path used to get to the directory (what
> with symbolic links and -- at least at one time on certain filesystems --
> the potential of a directory entry being present in multiple parent
> directories).

I see 'realpath' in coreutils

-- R