IBM has published the following technical articles, tutorials, and downloads on its developerWorks Website. They cover a range of interesting (though not necessarily embedded) technical topics, primarily related to Linux and open source system development. Some require free registration. Enjoy . . . !

• Build a minimal embedded Web interface — This installment shows you how to use small-footprint, highly portable, Free Software tools to Web-enable your unmanned submarine, in anticipation of browsing its onboard photo library from an underground lair in the next episode.
• Running Linux and BSD on the Mac Mini — NetBSD and Yellow Dog Linux have both begun to support the Mac Mini. Seebach looks at open source operating system options on this new contender in the embedded PowerPC platform space.
• AltiVec to improve performance on G4 and G5 PowerPC Chips — Motorola AltiVec can dramatically improve the performance of many tasks, even tasks that you might initially think are too linear to get much advantage from parallelizing. This article looks at some real-world code that processors might spend a serious amount of time running, and shows how to tweak it to get extra performance.
• Monitor Linux file system events with inotify — Inotify is a file system event-monitoring mechanism slated for inclusion in upcoming Linux kernels that is designed to serve as an effective replacement for dnotify, which was the de facto file-monitoring mechanism supported in older kernels. Inotify is a powerful, fine-grained, asynchronous mechanism ideally suited for a variety of file-monitoring needs including, but not limited to, security and performance.
• LPI certification 101: Linux Fundamentals — In this tutorial, Daniel Robbins begins preparing you to take the Linux Professional Institute's Exam 101 Release 2. In this first in a series of four tutorials on the 101 exam, Daniel introduces you to bash (the standard Linux shell), shows you how to take full advantage of standard Linux commands such as ls, cp, and mv, explains Linux's permission and ownership model, and much more.
• Higher Order Functions — Functions are the wonderful and powerful building blocks of computer programs. Functions allow you to break code down into simpler, more manageable steps. They also allow you to break programs into reusable parts — parts that are both reusable within the program and in other programs as well. In this article, learn how to create new functions at runtime based on templates, how to create functions that are configurable at runtime using function parameters, and how the Scheme language can be a valuable tool with functions.
• Problem determination using the Java logging APIs — This tutorial shows you how to configure Common Base Event logging in the Java language. Learn how to log Common Base Events through the Java Logging APIs for consumption by the Log and Trace Analyzer. The Log and Trace Analyzer can be used to log Common Base Events to detect and resolve configuration errors, performance degradation, exception states, resource starvation, security failures, communication delays, deadlocking, and other problems.
• Complex layered configurations with AppConfig — AppConfig shines as a way of configuring applications in Perl in the simple cases, but occasionally you need more power in command-line processing and configuration-file parsing. Instead of using data formats such as XML or YAML, you can apply a little extra effort and alter AppConfig so it can process complex command-line switches to create multi-level hashes.
• Naturally occurring standards — The phrase “de facto standard” can denote anything from proprietary tyranny to a healthy, vibrant, market. What makes a standard viable without the formal blessing of a standards organization? Should you use such informal standards, or ignore them?
• Exploit the 64-bit power of Linux with Informix Dynamic Server — A 64-bit environment and the ability to address more than 4 GB of memory can greatly enhance the scalability and performance of databases. With IDS v10, IBM has optimized native 64-bit editions for all major Linux platforms. This article contains information on all the new features of Informix Dynamic Server Version 10.0 that are unique on Linux platforms.

 
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