Threaded interrupt handlers came out early in the discussion. This feature was merged into the mainline for the 2.6.30 kernel; it is useful in realtime situations because it allows interrupt handlers to be prioritized and scheduled like any other process.

GPRS is a technology used by mobile phones to transmit data. If you have internet access on your cellphone, it's likely that you are using GPRS. A project called OsmocomBB is underway to develop software that could be used in free mobile devices. Progress has been good, with regular telephone calls and text messages already working, but data connections are still not supported.

Will learn how to define security policy to digitally sign and verify SOAP messages with example. In the web services scenario, XML messages are exchanged between the client application and the web services. Certain messages contain critical business information and, therefore, the integrity of the message should be ensured. Ensuring

System monitoring tool Nagios offers a powerful mechanism for receiving events and commands from external applications. External commands are usually sent from event handlers or from the Nagios Web interface. You will find external commands most useful when writing event handlers for your system, or when writing an external application that interacts with Nagios.

Unless you are one of the few who have upgraded to Froyo, or you have rooted your Android phone, chances are, you are still not able to tether using your Android phone. Those who are seeking a solution, PdaNet is the easiest way available to provide tethering to your Mac or PC.

"..The first post in this series is going to be about not so well known GNU/Linux program called Pipe Viewer or pv for short. Pipe viewer is a terminal-based tool for monitoring the progress of data through a pipeline.

Bash error messages, like so many error messages, can be more cryptic than helpful. But the good news is bash has a built-in mechanism for creating your own customized error messages, and you don't have to be an ace programmer to do it. Ubuntu and openSUSE already use this; Akkana Peck shows us how to do it ourselves.

Bradley Kuhn explains why negative messages are not always detrimental to progress

This in-depth, hands-on article introduces Android, Google's Linux/Java mobile phone SDK (software development kit). After a tour of Android's tools, documentation, and code samples, it suggests a path for further exploration and concludes with a simple applet showing the power and simplicity of the Android environment. Enjoy . . . !