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Previously, we covered the basics of what you need for this project and showed how to set up your Raspberry Pi. Here, we’ll focus on the components and connections for the light show, and in part 3, we’ll put it all together with the music.

What do you do when you want to open a PDF file in Ubuntu? Simple, double click on the PDF file icon, or right-click and select the "Open with Document Viewer" option. But what if you're asked to do the same task through the command line? Do you know the command line utility that will do the job for you? However, you'll be glad to know that there's way through which you can launch Evince for a PDF file, even if you don't know the fact that a command line utility of that name exists, and that's what we'll be discussing in this article.

In this week's Top 5, we highlight why the operating system matters, getting started with Raspberry Pi, seven projects you might have missed in 2016, ten tools for sysadmins, and an interactive calculator for the Linux command-line. Top 5 articles of the week 5. ?Why the operating system matters even more in 2017 read more

A few moments ago, Valve's engineers pushed a new Steam Client Beta, the fourth one for the week of December 5, and while it's not a major milestone, it brings an exciting feature for Steam Controller users on Linux platforms.

I built a music-light show for Halloween, but I improved it and added more features as I worked on the Christmas project. In this series, I'll provide comprehensive instructions to build a fully automated Christmas music/light show that turns on automatically at a given time or that you can plug and play.

If you want to develop the application with MS SQL database backend on Linux now possible, you can follow the following article.

Open source software enables Google to build things quickly and efficiently without reinventing the wheel, allowing us to focus on solving new problems. We stand on the shoulders of giants, and we know it. This is why we support open source and make it easy for Googlers to release the projects they're working on internally as open source. read more

Congatec’s “Conga-MA5” is a Linux-ready COM Express Compact Type 10 Mini module with Apollo Lake SoCs, up to 128GB eMMC 5.1, and -40 to 85°C support. Congatec was one of the first embedded vendors to announce computer-on-modules based on Intel’s Atom E3900 and other Apollo Lake Pentium and Celeron SoCs. The offerings included a Qseven […]

In this tutorial, we will explain how to install and configure an OpenVPN server which is one of the most popular VPN software solutions on an Ubuntu 16.04 VPS, on both server-side and client-side. This guide should work on other Linux VPS systems as well but was tested and written for Ubuntu 16.04 VPS.

In my first article on getting started with the Groovy programming language, I left off with an example of reading a CSV file in Groovy. In this article, I'm going to move to a more idiomatic Groovy style (make it groovier, as some would say), cover the use of Groovy maps as lookup tables, and finish up by using maps to calculate some results. First things first—here is the final example from the last article, in more idiomatic Groovy: read more

You can be your own Geordi La Forge and build yourself a fully capable GNU/Linux pocket computer with this uber inexpensive five-inch touch screen and a Raspberry Pi.

Sometimes, the easiest way to geotag photos in digiKam is to copy and paste geographical coordinates from an existing photo. I usually use Google Photos for that, as it conveniently displays geographical coordinates of the currently viewed photos in the information sidebar.

The New C C99 is the C standard ratified by the ANSI and ISO standardizaion groups. It presents a significant amount of changes to the C language. These changes are the result of sibling competition between C and C++. The initial... Continue Reading →

Python,the high-level interpreted programming language is now one of the most preferred programming language by beginners and professional-level developers.So,here Python 3.6 is now available with many changes,improvements and of course the ease of Python was not left in the work list.[....]

This guest column from analyst firm VisionMobile Ltd. examines the impact of open source on the IoT, and suggests how companies can maximize its benefits. ? ? A Guide to Open Source in IoT by Stijn Schuermans, Senior IoT Analyst, VisionMobile Ltd. ? Introduction With the dawn of the Internet of Things, software is making […]

In part 1, we installed and tested the Postfix SMTP server. Postfix, or any SMTP server, isn't a complete mail server because all it does is move messages between SMTP servers. We need Dovecot to move messages off your Postfix server and into your users' email inboxes.

Everything has a season, and as organizations age—communities, charities, companies, churches and more—they face similar diseases of time. These are emergent patterns of failure that arise not from mistakes but from the consequences of earlier success. In open source, we are seeing the same patterns emerge; this should not be a surprise. read more

Install Munin (Monitoring Tool) on Ubuntu 16.04 (Xenial Xerus) Server

At the recent ELC Europe event in Berlin, Bird gave a “Status of Embedded Linux” keynote in which he discussed the good news in areas like GPU support and virtually mapped kernel stacks, as well as the slow progress in boot time, system size, and other areas that might help Linux compete with RTOSes in IoT leaf nodes.

WordPress is among the most widely used open-source technologies in the world, powering more than 70 million websites. WordPress 4.7 was released Dec. 6, providing a new milestone update including new features for both users and developers.