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More than a year ago we started developing Firecracker, a virtual machine monitor (VMM) that runs on top of KVM (the kernel-based virtual machine). We wanted to create a lightweight VMM that starts virtual machines (VMs) in a fraction of a second, with a low memory footprint, to enable high-density cloud environments. read more

If you are following our C programming tutorial series, you should be aware of the concept of variables. While we've discussed the basics of variables, there's another important aspect related to variables that we'll be discussing here: scope of variables.

Are you new to using Fedora, or have a question about using Fedora? Got a story or helpful hint for Fedora that you want to share? You want to check out Fedora Discussion. It is a relatively new place where users and members of the Fedora Community meet to discuss, ask questions, and interact. Fedora […]

I recently discovered a new daily puzzle, known as "spelling bee", that the New York Times offers online. I do pretty well at this puzzle, but I've never managed to find all of the hidden words. Nevertheless, I have become queen bee on a few occasions. How? The answer is simple. I cheated. How? Using Python, of course.

News briefs for March 11, 2019.

Is there a hotter topic in technology than securing your computer? Some experts will tell you that there is no such thing as perfect security. They joke that if you want your server or application to be truly secure, then turn off your server, unplug it from the network, and put it in a safe somewhere. The problem with that should be obvious: What good is an app or server that nobody can use? read more

The Raspberry Pi is a small, single-board computer originally intended for teaching and learning programming and computer science. But today it's so much more. It is affordable, low-energy computing power that people can use for all kinds of things—from home entertainment over server applications to Internet of Things (IoT) projects. read more

Ahmed Darwish is the developer now pursuing this "kernel oops viewer" with the intention of implementing the support as "minimal" DRM drivers for each hardware

Fedora test days are events where anyone can help make sure changes in Fedora work well in an upcoming release. Fedora community members often participate, and the public is welcome at these events. If you’ve never contributed to Fedora before, this is a perfect way to get started. There are two upcoming test days this […]

Until now, this series has focused on the Raspberry Pi's software side, but today we'll get into the hardware. The availability of general-purpose input/output (GPIO) pins was one of the main features that interested me in the Pi when it first came out. GPIO allows you to programmatically interact with the physical world by attaching sensors, relays, and other types of circuitry to the Raspberry Pi. read more

Congatec announced a “Conga-B7E3” COM Express Type 7 module that runs Linux or Windows on AMD’s up to 16-core Epyc Embedded 3000 with up to 96GB DDR4, 4x 10GbE networking, 32x PCIe lanes, and an optional 1TB NVMe disk. AMD announced its embedded server class Epyc Embedded 3000 in Feb. 2018 in tandem with its […]

Mathematics and science tools often depend on cluster and high performance computing, both undeniably Linux strengths. Couple that with the maturity of the science tools available for Linux and you get a lot of computational bang for your buck. Join us this weekend as we review physics, chemistry, biology, astronomy, and other science programs for Linux.

Back in the fifth article in our series on getting started with the Raspberry Pi, I mentioned Minecraft as a way to teach kids to program using a gaming platform. Today we'll talk about other ways you can play games on your Raspberry Pi, as it's a great platform for gaming—with and without emulators. read more

In this article, I introduce another option available for the astronomers out there—specifically, Cartes du Ciel, also known as SkyChart. Similar to other larger astronomy programs, you can use SkyChart from the desktop to the observatory.

News briefs for March 8, 2019.

Many VPS (or cloud) providers offer a Fedora image; if yours doesn’t, ask them to consider doing so. Fedora 29 cloud images are available here https://alt.fedoraproject.org/cloud/. However, in that case this article gives you an alternative to try. In some cases the provider will allow you to load a custom image (raw or QCOW format). […]

Canonical will keep Trusty Tahr fixes flowing... for a fee. Canonical has made good on its promise to keep on patching the venerable 14.04 Long Term Support (LTS) version of the Ubuntu operating system as it emitted updated installation media.…

PyroCMS is a powerful, modular, Open Source CMS and development platform built with Laravel 5. In this tutorial, I will show you how to install Pyro CMS on Debian 9 with Nginx web server and MariaDB database.

Cincoze unveiled fanless, Apollo Lake based “DC-1200” and 8th Gen Coffee Lake based “DX-1100” industrial PCs, both with shock, vibration, and -40 to 70°C support plus expansion via M.2, mini-PCIe, and Cincoze’s CMI and CFM modules. Cincoze unveiled a compact DC-1200 industrial computer with a quad-core Pentium N4200, as well as a more advanced and […]

Following the publication of the Small Scale Scrum framework, we wanted to collect feedback on how teams in our target demographic (consultants, open source developers, and students) work and what they value. With this first opportunity to inspect, adapt, and help shape the next stage of Small Scale Scrum, we decided to create a survey to capture some data points and begin to validate some of our assumptions and hypotheses. read more