He who is slient, is strongest.

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.

The free and open source office suite OpenOffice.org might be a killer app for many, but its inability to properly display documents created in the proprietary Microsoft Office formats hinders its widespread acceptance in multi-OS business environments with many legacy .doc and .xls files. If changing over to an open document format is not an option, try SoftMaker Office. It's no OpenOffice.org-killer, but it's a full featured office suite that has great compatibility with Microsoft Office. Sure, it costs $80, but you can increase your karma by running it on Linux.

Bandwidth limitation is still a problem for a lot of people who connect to the Internet. You can improve your available bandwidth by installing Squid caching proxy server on your network with configuration parameters that will increase your byte hit rate, giving you about 30-60% more bandwidth.

StarOffice 9 reminds me of the classic Monty Python skit in which Graham Chapman wrestles himself. Although StarOffice is being aggressively presented as an alternative to Microsoft Office, it seems to be equally marketed and bundled to compete against OpenOffice.org, the free software project that is sponsored by Sun and that shares a common code base with StarOffice. The trouble is, the differences between the two have diminished with each release, until, with StarOffice 9, you have to wonder who the potential customers might be.

The Linux desktop comes with a variety of multimedia players, such as Xine, MPlayer, and Amarok. Yet all digital media players are only as good as the files they have to work with, and preparing those files requires the best tag editor you can find. I checked out half a dozen of the more popular and stable graphical ID3 tag editors available for Linux. I found that going from no tags to great tags requires keeping more than one of these editors on hand.

With diff-ext, GNOME users can compare and merge files from within Nautilus. If, instead, you use KDE 3, try out kdiff-ext from the same site, which works with Konqueror. Each utility handles paths to files and directories and invokes an external diff tool to perform the grunt work. With diff-ext you can easily compare two files with different names, from different directories, or whole directory trees.

The iPhone and iPod Touch haven taken the mobile market by storm. Apple's AppStore is full of interesting applications that take advantage of the two devices's capabilities. But what's in there for Linux users? Sadly, GTKPod and Amarok cannot yet transfer files on an iPhone with the 2.x firmware upgrade, but there are other interesting ways your iPhone can interact with your Linux desktop and even servers.

From its name, you'd never know that sK1 is a good vector graphics drawing program, in the same category as better-known names like Inkscape, Dia, and OpenOffice.org Draw. Moreover, sK1 includes a feature that other Linux applications lack: it can read CorelDraw's CDR files and convert them to Linux-friendly formats.

C Cod is a front end to your C, C++, or Objective-C compiler that lets you treat C more like a scripting language. C Cod comes with C Server Pages, which provides support for CGI so you can write Web applications in C or C++ and have them automatically compiled on demand.

In 2005, when Slumberland faced end-of-lifecycle replacements of its proprietary Unix platform, its warehouse management system (WMS) vendor suggested a move to Red Hat Linux and commodity x86 servers. Seth Mitchell, the infrastructure team manager at the large furniture retailer, gladly agreed. Upper management wasn't quite as quick to jump on the open source bandwagon, but once the cost savings started rolling in, everyone agreed that it was a profitable decision.

Kraft helps you keep track of business offers and invoices and can generate PDF files to help you easily issue these routine documents to third parties. Since Kraft is a KDE application, it can draw contact information directly from your KDE address book, so you don't have to duplicate or sync your contacts in order to generate an invoice.

Several extensions can help you work with photographic images on your Joomla! content management system. Here are some of the best.

Most of the new breed of open source hardware centers on specific products. Bug Labs is taking a different approach. Instead of developing particular devices, Bug Labs' goal is to provide a Lego-like collection of open source hardware and software that customers can use to build their own devices. According to CEO Peter Semmelhack, the result should be not only a higher degree of innovation, but also a forerunner of the hardware business of the future.

Mantis is that rare bug-tracking program for small projects that is neither too bloated nor too featureless. It's an excellent choice for developers who need a bug tracker that the average computer user can use. Its clean interface and numerous features make bug tracking fast and easy.

Linux users have a myriad of calculators and unit conversion tools at their disposal. To set itself apart, Frink aims to track units for you and give you a way to quickly perform little conversions and real-world calculations without burdening you with needless details.

The word "big" has two meanings here. Ace Suares is not only a big-time GNU/Linux and FOSS advocate, but he is close to 2.5 meters tall and built like a football lineman. He lives on the island of Curacao in the Netherland Antilles, where he and his wife run a small Web design and hosting firm that (of course) runs Linux servers. But trying to convert other IT people on Curacao to the FOSS cause has not been easy, and has caused Ace plenty of frustration over the years. Somehow, he keeps going; arranging conferences, holding LPI Certification classes, and generally talking up Linux to his clients, friends, and even to strangers whose businesses or government agencies might be made more efficient by using FOSS instead of proprietary software. Now we'll get out of the way and let Ace tell his story directly to you in the following video. (It's about 13:20 long.)

Just upgraded your system with a shiny new hard disk and want to make it your new book disk? Cloning Ubuntu to another hard disk is easy. In fact, Ubuntu provides tools to clone the entire hard disk -- including the Windows partition, if there's one on there. This is the kind of fundamental task that Linux excels at, in fact.

Over time, people tend to accumulate a large number of messages in various email accounts, most of which they never bother with again. The problem is particularly acute for administrator accounts that receive routine notifications of events that are viewed, if at all, no more than once. The archivemail tool lets you easily archive these old messages and thereby free up some disk space and improve your mail client's performance.

Attorney Andrew Updegrove specializes in technology, intellectual property, and standards. While other lawyers can make the same claim, few have his credentials -- maintainer of an online repository about standards consortia, former board member of the Linux Foundation, and progenitor of a major open source license.

The Splashtop instant-on Linux environment is included in the new Lenovo IdeaPad S10e netbook, marking the product's first appearance in that form factor. That news should come as no surprise, since netbooks' ultra-portability is a natural match for Splashtop's instant-on.