"Comprehensive . . . The third edition of How Linux Works is a good introduction to Linux that also is organized such that readers can flip through and go as far into a subject as necessary to answer questions at hand, skipping the more extensive explanations that aren’t crucial for their current topic of interest. In that regard, the book is a nice reference to have on the bookshelf."
—Lee Teschler, Microcontroller Tips

"The book is very thorough—from looking down into the hardware, through delving into how the kernel functions, to covering the most important commands, file systems, swap space, boot loaders, networking and more. In fact, I'm not at all surprised that this book has survived to its 3rd edition—both because it's a genuinely good book and because Linux has gone through some serious changes in the past seven years, especially related to such things as its use of containers, the flexibility of logical volume manager and the continued move toward virtualization. . . . This is a very thorough and up-to-date book. After using Unix and then Linux for nearly 40 years, I am still getting a lot of value and significant insights from reading it."
—Sandra Henry-Stocker, longstanding Linux journalist

"If you've not read this book yet, you really should. It's very good, highly detailed, approachable, comprehensive, and just an overall joy to read as a Linux nerd. Highly recommend!"
—Adam Miller, @TheMaxamillion

"This book provides an overview of Linux, with some information on how to dive deeper into its topics. Recommended."
—Ian Bruntlett, C Vu Journal Vol. 33 #4, ACCU

"I recommend [How Linux Works] if you want to learn and understand the core functioning of Linux. [It's] the perfect book if you are absolutely new or if you want to improve your Linux knowledge."
—It's FOSS - Linux Portal, @itsfoss2

"A fantastic book which I highly recommend whether you are new to Linux or an old hat."
—The Security Noob

Reviews for How Linux Works:

“If you are interested in Linux, How Linux Works: What Every Superuser Should Know is a must-read title.”
—LinuxInsider

“Lots to offer on almost every aspect of the Linux architecture.”
—Everyday Linux User

“You’ll get an essential understanding of what’s going on under the hood without getting bogged down in minutiae—making this a very refreshing (and wholly recommended) addition to the Linux literature.”
—Phil Bull, co-author of Ubuntu Made Easy and member of the Ubuntu documentation team

“Dives straight into the transparent depths of Linux-based operating systems and shows us how all the pieces fit together.”
—DistroWatch

“Earns its place on the shelf as an essential reference.”
—The MagPi magazine