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Scheduling Magic: Intro to Cron on Linux

You might not be aware of this, but magic happens in the background of the Linux operating system. Without your help or intervention, programs start and daemons run. These things happen because Linux has an outstanding scheduling system known as cron. Want to make some magic? Let's get to know cron.

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Weekend Project: Benchmark Your Browsers on Linux

With the Firefox 4.0 release right around the corner, the big question for a lot of users is how fast is Firefox 4.0? How does the new Moz compare with Google Chrome, Opera, and the rest? If you're curious, take some time this weekend to perform your own benchmarks and see for yourself. Consider this an audience participation article: We're looking for your feedback as well.

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How To Integrate ClamAV Into PureFTPd For Virus Scanning On openSUSE 11.3

This tutorial explains how you can integrate ClamAV into PureFTPd for virus scanning on an OpenSUSE 11.3 system. In the end, whenever a file gets uploaded through PureFTPd, ClamAV will check the file and delete it if it...

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TileMill Puts Web GIS on the Map

If you're anything like me, you love a good map graphic, particularly one that brings what would otherwise be dull and boring data to life. The technical term for tools that render statistics into visual form with maps are geographic information systems (GIS). Open source has a wealth of top-notch GIS tools like GRASS and gvSIG, but their power comes with a learning curve. TileMill is a new tool that bucks the trend, letting complete newcomers to GIS build slick looking static or interactive maps with minimal fuss.

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A Who's Who Guide to Open Source Augmented Reality Apps

Augmented Reality (AR) is one of those nebulous computing terms that can mean entirely different things to any two vendors. AR covers everything from games to computer vision to mash-ups of Web services — but the most useful applications are those mobile browsers that grab your current location and overlay relevant information about the things around you. Layar, Google Goggles, and Wikitude, for example, can place photos, Web pages, or a multitude of other information about your surroundings right at your fingertips. But if you care about open source, have no fear: there are plenty of alternatives to the proprietary AR app vendors. Let's look at what they offer, where they differ from proprietary AR, and where the field seems to be going.

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