Linux & BSD

This updated edition of Absolute FreeBSD adds coverage of modern disks, the ZFS filesystem IPv6, redesigned jail and packaging systems, virtualization, and more.

Absolute OpenBSD, 2nd Edition is a practical and straightforward guide for the experienced Unix user who wants to add OpenBSD to his or her repertoire.

A modern fairy tale that conveys the joy of tinkering and calls for self-determined use of software.

As a full-featured, free alternative to Adobe Photoshop, GIMP is one of the world's most popular open source projects. The Artist's Guide to GIMP teaches you how to use GIMP without a tedious list of menu paths and options.

Blender Master Class is a hands-on guide to the potential of the popular open-source 3D graphics tool. Chapters walk through the steps in the modeling process.

The Book of PF, 3rd Edition is the essential guide to building a secure network with PF, the OpenBSD packet filtering tool.

"If you understand C and want to learn how to manipulate the FreeBSD kernel, Designing BSD Rootkits is for you. Peer into the depths of a powerful operating system and bend it to your will!"
—Richard Bejtlich, TaoSecurity

• View a sample chapter, Chapter 2: Hooking
• Download the source code files here (.tgz archive)

FreeBSD Device Drivers is the first and only book to teach readers how to develop device drivers for the FreeBSD operating system.

This comprehensive introduction to Unix system programming—with an emphasis on Linux—teaches beginners how the Unix OS is designed and structured "under the hood."

Linux Basics for Hackers uses the Kali Linux distribution to explain core Linux topics like filesystems, networking, package management, and BASH.

A practitioner’s guide focused on postmortem analysis of modern Linux installations.

An updated guide on using the graphics editor to draw, work with objects, and apply effects.

This newly revised edition of The Linux Command Line contains various modernizations, including bash version 4.x and several useful new features.