I just launched a big update to Working With Unix Processes, an eBook addressing Unix programming specifically for Ruby developers. The book was released back in December but it never got a mention here on Rubyflow. To mark the release the book is selling for 25% off today only.

The update includes ~20 pages of new content covering stuff like zombie processes, preforking servers, and environment variables. You can read a <a href='http://workingwithunixprocesses.com/pages/daemon-processes-in-ruby'>sample chapter on Daemon Processes</a>.