February 2002
Emmett DulaneyEmmett continues his coverage of Level-Two Linux certifications. Find out exactly what you need to know for the LPI 201.
Ben RothkeRothke discovers a resource that won't waste your time or your money -- or a lot of trees.
Stanley WongWeb cache proxies are often promoted as one means to save network download costs. In my experience, they have had only a small influence on the network volume and, at first glance, the return on investment (ROI) is not worthwhile. However, after further analysis, the major contribution of Web cache proxies to the balance sheet is in productivity costs to the organization. The total cost of ownership (TCO) of Internet services is adversely affected in the absence of a Web cache proxy. I’ve provided a sample Perl script that can be used to analyze Web cache proxy effectiveness (as opposed to the cache proxy hardware/software performance).
Ed SchaeferEd turns the spotlight on a "Generic Parameter Parsing Engine" submitted by David Thompson.
Joe "Zonker" BrockmeierThere are many reasons to filter your mail. For example, I subscribe to several mailing lists and get email from several different accounts; some of that mail is fairly important and some isn't urgent at all. And, of course, there's the ever-continuing battle against spam.
Lee RatzanAre you up for a good mystery, cloaked in the guise of an incident report scenario? This book contains 20 incident report scenarios, complete with elements of deception, intrigue, false identity, forensics, complexity, and mitigation. A sample solution is provided for each scenario.
Cameron Laird and Kathryn SoraizLet's be clear what we're talking about. Tk (http://mini.net/tcl/Tk)is the graphical toolkit maintained along with the core distribution of the Tcl language. Although John Ousterhout, creator of Tcl, sketched a crude version of Tk in 1988, the first one usable outside his laboratory appeared in 1990. Since then, Tk has emphasized portability (binaries are available not only for Unix, but also MacOS, Windows, and even OpenVMS), ease of learning ("Hello, World" is a one-liner), simplicity (Tk is used in many mission-critical and long-running "control panels" that can't tolerate memory leaks or other software surprises), and compatibility with other software (Tk is often the "glue" that reshapes existing programs).
Joe "Zonker" BrockmeierWhether you run a small business or large corporation -- or just have a desktop PC at home -- if you're connected to the Internet for any amount of time, you need a firewall to keep your data safe. People with ill intentions will try everything from stealing your credit card data, to exploiting open mail relays for spam, or even manipulating potential (and unwitting) participants in Distributed Denial of Service (DDoS) attacks.
Ben RothkeRothke notes that, although most of us aren't lawyers, the topics in this book -- cyber-security, consumer fraud, free speech rights, intellectual property rights, file-sharing programs, and more -- are worth reading about.
"Ready to join the Web Services revolution"? However immune you are to such marketing-driven labels, there’s a valuable technical core to Web Services (WS), and it’s likely to lead to important changes, if not a revolution. Don’t let those changes make you uneasy, though — you’ll continue to find that Perl is one of the best ways to get your work done.
Joe "Zonker" BrockmeierI found this little gem while browsing around Freshmeat for something else, and I'm glad I did. Freshmeat is kind of a virtual bookstore for me -- I always leave with more than I originally came for.
Change Suffix (chsuf) is a Perl script that will change, add, or delete a suffix for files or directories. You can find the Change Suffix utility at http://sourceforge.net/projects/chsuf/. The current version is 0.9, but it certainly seems ready for prime time.
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