Many logging and user-related commands can help you check on your system and keep track of security matters. We guide you through several helpful tools.

The Nepomuk semantic desktop has matured with the KDE 4 series. We look at how you can use Nepomuk to structure information about the files, folders, and applications on your system. Then, discover Qt build tool Qmake, social media data mining, and the e-commerce services of eBay and Amazon.

Downloading files is central to modern computing. Whether you use your browser's function or rely on more specialized tools, you won't find a more versatile utility than Aria2.

The single-circuit-board Raspberry Pi computer, only as big as a credit card, makes it easy to gain experience with embedded Linux systems. We'll show you some hands-on examples of how to use the Raspberry Pi in an everyday environment.

This month, Rasp Pi becomes a multimedia system, then we look at three great tools to create, manage, and monitor your virtual environments.

The mysterious /proc virtual filesystem is a rich mine of information about everything in your system.

Security applications like antivirus protectors respond to events, rather than preventing them from happening, but the best security in Linux is architectural – that is, in its configuration.

Using the Common Unix Printing System, you can configure and manage your printer from the command line.