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This part describes the basics of Ruby language, with syntax, flow control structure and some of the build-in objects and methods. Notice this is not the complete Ruby course, only the parts which might be useful in a daily Admin work.

I assume that the Reader knows Unix Shell scripting, so there is no need to bother with real programming basics, like how if-then-else works. In the same time I do not assume you know Object Oriented programming paradigm. Don't worry, Ruby is easy!