Hi everyone, author here.<p>The idea behind the book is to teach beginners to use the command line through "adventures", where I start with a question, find relevant public datasets, and guide readers through answering the questions with basic command line tools (pipes, grep, cut, sort, awk, join, arrays, for loops, etc.). For example, I show how to calculate the average tip of a NYC cab driver, look for a correlation between GDP and lifetime expectancy, and more.<p>If you're interested, please check out <a href="https://gum.co/datascience" rel="nofollow">https://gum.co/datascience</a> and use the coupon code "HN" until Wednesday to get 30% off.<p>If you'd like a preview of the book, get your free chapter at <a href="http://www.adventuresindatascience.com/#freechapter" rel="nofollow">http://www.adventuresindatascience.com/#freechapter</a>