Welcome to the Linux newsletter. It's Thanksgiving here in the United States, a time of reflection. (It also marks the start of the end of the year, with all of the football, food, family, and festivities that entails.) On behalf of the O'Reilly Network, I'd like to wish you a wonderful holiday season, no matter where you are.
What is truth? Philosophers have pondered this epistomological query for ages. They had it easy, though--they didn't have to worry about truth and non-truth cluttering up their result sets from database queries. In two recipes excerpted from the "MySQL Cookbook," author Paul DuBois explores the nature of NULL in aggregate queries and how to identify multiple rows. Read it only at Cooking with MySQL.
Unix is nearly infinitely customizable. The range of platforms and applications for the free BSDs and Linux is amazing. That customizability has a price though: complexity. In the latest installment of Big Scary Daemons, Michael Lucas dispels the mystery swarming around BSD disk images, demonstrating how to create custom-boot floppies. This technique works for any kind of disk, though.... Read more at BSD Disk Images.
It is the nature of any useful free software project to grow until it supports plug-ins--and then, to attract a stable of the same. Emacs and Mozilla qualify. So does CVS, and that's the subject of Jennifer Vesperman's latest article. She presents a guide to some of the most useful and popular third-party add-ons to help you be more productive. Looking for a nice front-end? Read her reviews in CVS Third-Party Tools.
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That's all for this week. Safe travels to all those who take to air, sea, and sky. If we're lucky, we'll soon have an article about Gentoo GNU/Linux on a Powerbook G4. (I'll be thankful if that happens!)
Linux/Open Source/Technical Editor
Today's Unix: New All Over Again
Shelley Powers, coauthor of the recently released Unix Power Tools, 3rd Edition, says today's Unix is sexier and friendlier than yesterday's Unix. Gone is its tough, geeks-only image. In this article, Shelley maps out why Unix's blend of old and new has made it more easily accessible to everyone.
Noel Davis looks at a large set of problems in BIND; buffer overflows in KDE's LISA, libpng, masqmail, FreeBSD resolver code, Windowmaker, Tiny HTTPd, and Zeroo HTTP Server; and problems in Lib HTTPd, KDE's telnet and rlogin KIO code, Kgpg, Squid, and UnixWare and OpenUnix's talkd.
Top Five Open Source Packages for System Administrators
The countdown continues this week with number three, GRUB. This is the third installment in a five-part series on the most useful and widely applicable open source administrative tools, by AEleen Frisch, author of Essential System Administration, 3rd Edition.
The SSH Cryptosystem
OpenSSH encrypts sessions between two machines, making packet sniffing much more difficult. In the second of a series on Cryptosystems, Dru Lavigne explores the default configuration of OpenSSH on FreeBSD and demonstrates how to enable key pair encryption.
TriSentry, a Unix Intrusion Detection System
Security isn't only about locking your doors. You have to know when and where the bad guys are sniffing around outside. Glenn Graham's convinced that the tripartite TriSentry suite can help keep your network secure.
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