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Blogs and wikis are taking the Internet by storm. One reason these technologies thrive is simplicity for both end users and administrators. Administrators find that Apache Geronimo is a robust and secure platform for creating new blog and wiki applications. Find out how you, too, can create blog and wiki applications using Geronimo and other open source components.

Welcome to the next step in studying for the Linux certification exam 102 or a way to build fundamental skills on Linux system administration. Prepare to take the exam with confidence in this third of nine tutorials on exam 102 topics. Learn about printing in Linux with an introduction by Ian Shields, so that by the end of this tutorial you will know how to manage printers, print queues, and user print jobs on a Linux system.

Examine methods for standardizing your interface to simplify movements between different UNIX systems. If you manage multiple UNIX systems then the hardest task can be switching between the different environments and performing the different tasks while having to consider all of the differences between the systems. This article looks at ways that can provide compatible layers, or wrappers, to support a consistent environment.

In the SoC design for hardware acceleration series, author Sam Siewert migrates a simple C function to a SystemC specification that can be simulated and verified for ultimate implementation as a hardware function. Part 1 provided the C code and a general overview of video capture, streaming, and processing. Part 2 shows how hardware acceleration of emergent applications can benefit from SoC design and reconfigurable SoCs with hybrid C software and field-programmable gate array (FPGA)-based functionality.

For all its popularity, the RSS standard is surprisingly simple and, one can even write, limited. RSS does not pretend to do many things, but it is designed to be extended through RSS modules. This article introduces three popular RSS extensions and explains how to design your own extensions.

Jonathan Sagorin wraps up his thorough coverage of Enterprise JavaBeans (EJB) transactions in this last installment of a three-part series. In Part 1 and Part 2 of this series, you briefly looked at bean-managed and container-managed EJB transactions and how to implement them in the Apache Geronimo application server. In Part 3 discover the quirks and additional implementation and configuration choices related to both types of transactions.

Java server applications need not be difficult and tedious to create. Now in its second generation, the lightweight Spring framework adds a large suite of features that make it simple for even new server application developers to use. One key enhancement is Spring 2's integration with the Java Persistence API (JPA), a cornerstone of the Enterprise JavaBeans (EJB) 3.0 specification. In this tutorial, learn how to create server applications from scratch using the Spring 2 framework.

The EU has adopted a set of governmental standards for reduction of the use of hazardous materials in electrical and electronic equipment. This standard is called RoHS, and when the ex cathedra RoHS Directive came down, it was missing a little crucial piece of information -- how manufacturers, distributors, and purchasers of parts could communicate to each other the RoHS status of every part.

Explore PHP and XML development using the Eclipse IDE, DB2 Express-C 9, and WebSphere Application Server Community Edition. Learn how to install and configure these applications, part of a program designed to kick-start your application development, to develop a Web-based movie information database. This is part one of a two-part tutorial, covering the installation and configuration of the tools, along with some basic proof-of-concept code development.

BusyBox is a single executable implementation of many standard Linux utilities. In this article, explore the purpose of BusyBox how it works, and why it's important for memory-constrained environments. BusyBox contains simple utilities such as cat and echo, as well as more complex tools such as grep, find, mount, and telnet (albeit, with fewer options than the traditional version); some refer to BusyBox as the Swiss Army knife of utilities.

Just like a high performance sports car, a database requires some checks to keep it running optimally. This article is broken down into tasks or checks that you can run at different time intervals on your DB2 for Linux, UNIX, and Windows to ensure that your databases are running optimally, and detect potential issues before they happen. Learn when to monitor and what you should be doing daily, weekly, and monthly. Updated for DB2 9.

The GNU Linear Programming Kit is a powerful, proven tool for solving numeric problems with multiple constraints. Get an introduction to GLPK, the glpsol client utility, and the GNU MathProg language to help find the best solutions to complex numeric problems. Then, learn to solve the problem of optimizing the operations for Giapetto's Woodcarving, Inc., a fictional toy manufacturer.

Much of Linux system administration involves tediously combing through plain-text configuration files. Fortunately, Linux has a rich array of UNIX-derived data extraction utilities, including head, tail, grep, egrep, fgrep, cut, paste, join, awk, and more. This article uses real-world examples that show how these simple command-line programs can make you a better sysadmin. Also look at each data extraction utility and its options, and learn how to apply them to typical day-to-day work files.

Software development for new architectures can be an intimidating prospect, but the Cell Broadband Engine™ (Cell BE) SDK 1.1 provides the debugging tools you need to tackle it for the Cell BE architecture. This article describes how to use new versions of the GNU Debugger (GDB) to diagnose problems in both PPU and SPU programs.

Looking for the best way to get ready for the Linux Certification exam or just want to improve your Linux skills? With these top LPI exam prep tutorials you will be on your way. The topics, in order, include: Linux Kernal, System startup, Filesystem, Hardware configuration, Networking Configuration, Mail and News, Domain Name System, Web services, File and service sharing, Network client management, System maintenance, System security, System customization and automation, and Troubleshooting.

DB2 9 pureXML provides native XML storage and retrieval, as well as a new security protection mechanism called Label Based Access Control (LBAC). Combining these two features can produce a Native XML data store that can protect XML documents at the document level by labeling each document row with an LBAC security label, and assigning users their appropriate access level.

The LinuxThreads project originally brought multithreading to Linux, but didn't conform to POSIX threading standards. The introduction of Native POSIX Thread Library (NPTL) however, overcame many of these disadvantages. This article describes some of the differences between these two Linux threading models for developers who may need to port their applications or who simply want to understand where the differences lie.

The Linux initial RAM disk (initrd) is a temporary root file system that is mounted during system boot to support the two-state boot process. It contains various executables and drivers that permit the real root file system to be mounted, after which the initrd RAM disk is unmounted and its memory freed. In this article explore the initial RAM disk for Linux 2.6, including its creation and use in the Linux kernel. In many embedded Linux systems, the initrd is the final root file system.

Don’t let disaster happen to you. Lewin Edwards presents five engineering tips that are crucially important to successful product engineering, but which are rarely brought up in discussions of engineering practices. He will cover the absurd, the annoying, and the physically dangerous, and give you hints for avoiding all sorts of these situations.

Flex and Bison are powerful tools for developing lexical and grammar parsers, in particular language compilers and interpreters. Although it is easy to generate programs using Flex and Bison, it is a bit harder to make those programs produce user-friendly syntax and semantic error messages. This article examines the error-handling features of Flex and Bison, shows how to use them, and details some pitfalls.