Safari Gets Bigger and Better -- There are now more than 2,000 books from the industry's leading technical publishers available on Safari Bookshelf. As the library grows, so does its functionality: searches are powerfully precise and as broad or specific as you wish; and now, with a Safari Max subscription, you can download chapters to read offline. Safari will help you save time, reduce errors, keep current, and save more money than ever with up to 35% off print copies of your favorite books. If you haven't yet gone on Safari, try a free trial subscription.

Linux Untethered -- Wireless Linux is great, if you can find a hotspot. If you can't, you might consider a cellular data connection. It may be neither as slow nor as expensive as you think. In this article, Brian Jepson explores the state of cellular networking with Linux. Brian is a coauthor of Learning Unix for Mac OS X Panther.

Free Linux/Unix System Administration Course -- Get the fourth course in the O'Reilly Learning Lab Linux/Unix System Administration Certificate Series for free when you sign up for the first three courses. You save $150 on each of the first three courses, for a total savings of more than $900. Completion of the series will earn you a Certificate of Professional Development from the University of Illinois' Office of Continuing Education. Offer extended until February 15. Enroll now!

Troubleshooting with Postfix Logs -- Learn how to get the most out of Postfix's standard logging, including how to find all the relevant information in the logs, and how to increase the amount of logging when more information is needed, in this article by Kyle Dent, author of Postfix: The Definitive Guide.

Five Tips for a Better sendmail Configuration -- Craig Hunt says creating a custom sendmail configuration will give you better reliability, security, and maintainability, and he offers five tips to help you build a better sendmail configuration. Craig is the author of the recently released sendmail Cookbook.

Gastronomy for Geeks -- Pizza, Twinkies, and Jolt are geek haute cuisine for a stereotypical few. Many of you know the difference between au jus and baba ghanoush, and that Thai shish kabob isn't called sauté. So, you Geek Gourmets, come share your favorite recipes, and see what your peers are cooking.

Automating Administrative Tasks -- A few simple shell scripts will bring reliability, regularity, and enhanced system efficiency to the systems you administer. Learn how from Chapter 14 of Essential System Administration. Get a free trial to read this and four other O'Reilly books on Safari.

Most Indispensable Linux Books -- Over 7,500 readers visited the Linux Journal web site and voted on 28 categories in the 2003 Readers' Choice Awards. The number three pick for most indispensable Linux book is O'Reilly's Running Linux. And the winner is Linux in a Nutshell.

O'Reilly's Linux Lab Tests a New Perspective -- Linux is perceived as a geek's operating system, targeted at advanced users instead of the typical home user. But Linux offers many features that are far cheaper than the Windows alternatives. See how even marketing wonks can build, partition, and customize Linux on an old PC, as well as on a state-of-the-art AMD 64-bit system running SuSE 9.0 Linux, at O'Reilly's Linux Lounge.

Basic Unix Commands and Concepts -- If you've come to Linux from Windows or another non-Unix operating system, a knowledge of basic commands is vital. Chapter 4 of Running Linux, 4th Edition will give you a solid foundation. Get a free trial to read this and four other O'Reilly books on Safari.

Single Sign-on for Your Web Applications -- Jason Garman walks you through the implementation of SPNEGO, which allows for single sign-on of your web applications with Apache and Kerberos. Jason is the author of Kerberos: The Definitive Guide.

Five Lessons Open Source Developers Should Learn from Extreme Programming -- It may be hard to see how Extreme Programming (XP) can apply to open source projects, especially those without a formal customer. But to build a successful open source project, you must solve many of the same problems you'd face with an in-house project. Here are five lessons open source developers can learn from XP, from chromatic, the author of Extreme Programming Pocket Guide.

Linux Journal's Editors' Choice Awards -- Linux Journal has announced its editors' picks for this year's outstanding product developments and achievements in the Linux space, and O'Reilly won the category for Best Book in 2003: Understanding the Linux Kernel, 2nd Edition.

Customizing Your Shell Environment -- Chapter 4 of Learning Unix for Mac OS X, 2nd Edition shows you how to customize your Terminal environment, both from the graphical user interface using Terminal Window Settings, and from the Unix shell using shell configuration files. Get a free trial to read this and four other O'Reilly books on Safari.

Secure Cooking with Linux, Part 3 -- Learn how to use PAM to restrict authentication on Linux systems and how to use SMTP to accept connections from arbitrary clients securely in these latest sample recipes from Linux Security Cookbook.

Secure Cooking with Linux, Part 2 -- Learn how to restrict access to network services by time of day, and how to use sudo to permit read-only access to a shared file, in these sample recipes from Linux Security Cookbook.

Building Complex Command Lines -- Learning to chain together Unix commands into fluent sentences takes time, but armed with the handy Up arrow, it's possible to chain together commands with slight tweaks to achieve some very complex behavior. Learn how in Hack #6 from Linux Server Hacks. Get a free trial to read this and four other O'Reilly books on Safari.

Secure Cooking with Linux, Part 1 -- Learn how to authenticate by public key, encrypt backups, and combine log files in this first of three sets of recipes selected by the authors of Linux Security Cookbook.

An Interview with George Dyson -- In this interview with chromatic, George Dyson talks about his upcoming OSCON keynote in which he'll explore the pioneering work in computation and computational biology at the Institute for Advanced Study, drawing parallels between that world and open source development. Hear Dyson speak at July's Open Source Convention.

An Interview with Mitch Kapor -- Mitch Kapor heads the Open Source Applications Foundation, the group behind Chandler. In this ONLamp.com interview, Mitch gives us a teaser for his upcoming OSCON keynote on whether and how collaborative development can bring open source software to the desktop. Get the full story at this July's Open Source Convention.

Embedded Systems, Linux, and the Future -- Here's a comprehensive essay examining the various initiatives, moves, and trends having an impact on the future direction of embedded Linux, by Karim Yaghmour, author of Building Embedded Linux Systems.

Saving Our Bacon: Snort Security Holes and Strategies for Safe Network Monitoring -- Bob Byrnes reviews past attacks and recently discovered buffer-overflow vulnerabilities in Snort, a popular security-monitoring tool used for detecting suspicious network activities. He also discusses strategies you can use to minimize risks. Bob is a coauthor of Linux Security Cookbook.