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Most modern operating systems provide file monitoring facilities to give applications real-time information about changes to the filesystem. A variety of notification methods are used to tell the application when a change happens, ranging from an asynchronous signal being sent from the kernel through a user space tool printing the name of the changed file on its standard output. We'll take a look at some of the file monitoring facilities available to the Linux developer, starting with the lowest-level mechanism and working up to the highest.

In recent years "scripting languages" are becoming a path which is a must go for rapid application development. The open source community has seen many scripting language implementations. Some really popular and good ones available are perl and python.

IPC is one of the most important features of the UNIX systems. It allows two processes to communicate with each other. In this article we'll work with two System V IPC functions, semaphores and shared memory. System V IPC originated in SVR2, but has implementations by numerous vendors. It's also available in SVR4. This article introduces shared memory and synchronization (semaphores).

Start-up Black Duck Software next week will introduce two new products designed to help companies better manage their use of open-source...protexIP/Development software, a management tool for companies that develop with open-source software that allows managers to see which, if any, of their developers' software contributions contain open-source code, and provides an audit trail that tracks individual technical contributions.

A new interview has appeared on the KDE::Enterprise website. In this interview Walter Stolk tells us why International Hout has chosen to use KDE within their organisation.

In this third article on Bayesian inference, Paul Meagher examines how to use PHP and Bayes methods to solve classification problems in medical diagnostic testing and Web survey analysis. Learn how Bayesian and conditional probability concepts are applicable to both building classifier systems and analyzing the accuracy of their output.

While the first article in this series discussed building intelligent Web applications through conditional probability, this Bayesian inference article examines how you can use Bayes methods to solve parameter estimation problems. Relevant concepts are explained in the context of Web survey analysis using PHP and JPGraph.

As Linux PDAs and cell phones make their way into consumer and enterprise gadgets, an embedded version of the operating system has been developed for use as a public safety communications platform.

Microsoft Corp's flirtation with open source has seen the company release C++ product code to the community for developers to pick-up and modify.

Open source presents a large potential competitive advantage for hardware and software vendors, and vendors of complementary or substitute services. Linux has contributed greatly to the adoption and success of OSS. Companies such as IBM, HP, Red Hat, Oracle, and recently, Novell, have invested in, and legitimized the use of Linux for enterprise applications -- including datacenter operations.

Linux and open source seem to have energized Novell's user and partner community and may give Novell a chance to undo its most fundamental error vis-a-vis Microsoft--misjudging the importance of integration of its services with a capable application server and not having tight integration with the enterprise desktop.

In this issue, we cover special features: statements from the Fedora Project Leader, Cristian Gafton, as well as the Fedora Legacy Project Lead, Jesse Keating. Fedora Core 2 Test 3 has been released, notes for it accompany, along with tips on getting dual-head video as well as webcams that work well with Fedora. There are plenty more updates, with regards to documents, new scripts, and ideas to tame the lists.

Zend Technologies is completing its expanded third financing round, with a $4 million investment from a leading US West Coast venture capital fund. When the agreement is signed, expected in a few days, Zend will close the $10 million financing round. Zend had set itself a target of $8 million for the round. Including the present round, Zend will have raised $16 million to date.