Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good book and worth reading but there are more options, today!

It is well done UNIX book and one can pick much of useful info out of it. It offers good insight into many important issues and teaches proper terminology. I wish this book would be on the list in my college days. For more practical, down to the earth approach I recommendLinux and UNIX for a beginner training suite, 4DVDs + 2CDs includes 4 Unix Academy Certifications ed.2008. I give the book 4 starts because it is also little stale on some subjects but in general this book flies high.