100 Best Unix Books of All Time

As we said in the first preface to the first edition, C "wears well as one's experience with it grows." With a decade more experience, we still feel that way. We hope that this book will help you to learn C and use it well.

sed & awk describes two text processing programs that are mainstays of the UNIX programmer's toolbox.

sed is a "stream editor" for editing streams of text that might be too large to edit as a single file, or that might be generated on the fly as part of a larger data processing step. The most common operation done with sed is substitution, replacing one block of text with another.

awk is a complete

This edition covers features of sed and awk that are mandated by the POSIX standard. This most notably affects awk, where POSIX standardized a new variable, CONVFMT, and new functions, toupper() and tolower(). The CONVFMT variable specifies the conversion format to use when converting numbers to strings (awk used to use OFMT for this purpose). The toupper() and tolower() functions each take a (presumably mixed case) string argument and return a new version of the string with all letters translated to the corresponding case.

In addition, this edition covers GNU sed, newly available since the first edition. It also updates the first edition coverage of Bell Labs nawk and GNU awk (gawk), covers mawk, an additional freely available implementation of awk, and briefly discusses three commercial versions of awk, MKS awk, Thompson Automation awk (tawk), and Videosoft (VSAwk).

Banish Your Mouse.The Linux Command Line isn’t just a reference manual. It’s a complete education on how Linux really works. From your first tentative keystrokes to writing powerful shell scripts, you’ll build the confidence and understanding to make your system work for you.Now in its third edition, this best-selling guide has been fully updated with modern examples, nearly 40 pages of new conten

A revised introduction to the Linux operating system for beginning hackers and penetration testers.If you’re just getting started along the exciting path of hacking, cybersecurity, and pentesting, Linux Basics for Hackers is an excellent introduction. With Kali Linux, an operating system designed for digital forensics and penetration testing, you’ll learn the basics of using Linux and acquire the

Best-selling guide to the inner workings of the Linux operating system with over 50,000 copies sold since its original release in 2014.Linux for the Superuser Unlike some operating systems, Linux doesn’t try to hide the important bits from you—it gives you full control of your computer. But to truly master Linux, you need to understand its internals, like how the system boots, how networking works

Systems performance analysis and tuning lead to a better end-user experience and lower costs, especially for cloud computing environments that charge by the OS instance. Systems Performance, 2nd Edition covers concepts, strategy, tools, and tuning for operating systems and applications, using Linux-based operating systems as the primary example.World-renowned systems performance expert Brendan Gre

Beginner or expert, professional or hobbyist, this is the Linux guide you need! Install Linux and walk through the basics: working in the terminal, handling files and directories, using Bash, and more. Then get into the nitty-gritty details of configuring your system and server, from compiling kernel modules to using tools like Apache, Postfix, and Samba. With information on backups, firewalls, vi

The Linux Survival Guide (2026 Edition)Tired of dense Linux textbooks that read like academic lectures? 😩 Frustrated by 800-page guides that bury practical skills under mountains of theory?The Linux Survival Guide cuts through the noise to give you exactly what you need: fast, focused, real-world Linux knowledge you can actually use today.Why Linux Skills Matter in 202696.3% of top web servers run

Master Linux Shells – Your Complete Guide to Practical Success with Bash, Zsh, PowerShellKey FeaturesDevelop portable scripts using Bash, Zsh, and PowerShell that work seamlessly across Linux, macOS, and Unix systemsProgress seamlessly through chapters with clear concepts, practical examples, and hands-on labs for skill developmentBuild real-world Linux administration scripts, enhancing your troub

Master the art of offensive bash scripting. This highly practical hands-on guide covers chaining commands together, automating tasks, crafting living-off-the-land attacks, and more!In the hands of the penetration tester, bash scripting becomes a powerful offensive security tool. In Black Hat Bash, you’ll learn how to use bash to automate tasks, develop custom tools, uncover vulnerabilities, and ex

Take your Linux skills to the next level! Whether you're a system administrator, software developer, site reliability engineer, or enthusiastic hobbyist, this practical, hands-on book will help you work faster, smarter, and more efficiently. You'll learn how to create and run complex commands that solve real business problems, process and retrieve information, and automate manual tasks. You'll als