As I mentioned at the end of today’s workshops, I give you both presentation and all the source codes from the Day of Escape:

Here you can see the "extended" SimplePinger version, that I've been developing (i couldn't show you this during the workshops because of the IP tables rules that I have in my firewall):

Below list of other quite interesting webpages about Ruby:

And some stuff about Ruby on Rails:

Unfortunately most Ruby on Rails tutorials aren’t up to date. The current Rails version is 3.2.8 and there’s a lot of tutorials for 1.2 and 2.3 versions, so check before starting ;)