New design wanted for Programming eBook cover

Working With Unix Processes

I sell an eBook for programmers wanting to get their hands dirty with systems programming.

I'm looking for an eBook cover.

The eBook is a guide written by a programmer for programmers.

The cover should include only the following text elements:
title: "Working With Unix Processes"
author: "Jesse Storimer"

The book is about programming foundations, specifically getting work done / getting your hands dirty. I think something resembling plumbing/pipes might be appropriate.

Or perhaps something geometric. In this case something minimal, and on a white background, is preferred.

The concepts in the book have been around for decades. I'd love to see a few that reflect the vintage of the material.

Neither of these is a requirement.

The design will be viewed in the following contexts:

* The first page of a 7" x 9.25" landscape PDF.
* On the iBooks bookshelf (iPad, iTunes).
* As a cover thumbnail on a Kindle or other e-reader.

Ideally the design will integrate nicely into http://workingwithunixprocesses.com/.