Linux with Operating System Concepts

This book answered my question for a while; what did the OS look like before the OS when we know it today? I've read many books, but this is the first book that gave me the answer. In short, this book is not just the book that teaches how to use Linux commands but also the ideas behind that. It is also clearly written and easy to read. I highly recommend this book to anyone who wants to know not only Linux commands but also why and how it works with an interesting historical perspective.