Klaus Knopper answers your Linux questions.

Columnist Charly likes to keep system-critical daemons on two or more servers. If one of the servers fails, the idea is that the service can be started on the other and will be available at the same IP address – a scenario that works with or without the Pacemaker heartbeat.

Even hardened scientists can make mistakes when interpreting statistics. Mathematical experiments can give you the right ideas to prevent this from happening, and quick simulations in Perl nicely illustrate and support the learning process.

Adding a honeypot to your network will slow down attackers and warn you that intruders are on the wire.

The Atom code editor from GitHub is a highly configurable free application. Just one year old, even at this early stage, the mix looks very promising.

Get the most out of your Chromebook with these tips, tricks, useful open source extensions, and apps.

The Slap editor supports easy navigation, even through large volumes of data, but the promising software has a couple of hiccups along the way.

Get a grasp of color management basics and put your knowledge to practical use.

You may not need to defrag your Linux system very often, but the tools are waiting when the need arises.

The LibreOffice Viewer for Android displays office documents on mobile devices and now even has simple editing features. We investigate whether the smartphone and tablet app is useful as a helper for the main office suite.