Ruby is a dynamic, open source programming language with a focus on simplicity and productivity. It has an elegant syntax that is natural to read and easy to write.
Ruby is our language of choice for scripting: when you program in ruby it feels like playing a game. A lot of DevOps tools are written in Ruby which is a huge plus. It is much better to write scripts in some kind of scripting language then in bash scripts because code is testable and much closer to programmers.