Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Recommend highly!!!

This book is an excellent resource for Linux-literate individuals. I use it to tutor students and adults on Bash shell programming. For beginners, it may be too difficult, but the people with hands-on experience will appreciate its content of the each chapter. It lacks real-world examples but with imagination and creativity, you can easily drum up a number of viable samples. This book is not for people who need to be spoon-fed.