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In this tutorial we explain how to use the trap bash builtin to exit bash scripts cleanly. We explore examples of how to clean up temp files, ensure services stay running and close ports.

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 […]

Regularly updating your Ubuntu system is one of the most important aspects of overall system security.

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

GNU/Linux developer Arne Exton released a new version of his ExTiX Linux distro that has been rebased on the upcoming Ubuntu 19.04 operating system and ships with Linux kernel 5.0.

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 […]

Data analysis sometimes turns up unexpected "bulges" in the value of data items. Forensic auditors are trained to look for such things in business and banking accounts, because a bulge might be evidence of fraud or embezzlement. In the following three examples, bulges appear for more innocent reasons.

GNOME Web (or just Web) is another cool Internet browser that is powered by the same engine (Webkit) that powers Opera and Google Chrome Internet browsers. It's aesthetically beautiful while at the same time modern web pages are rendered well like those major browsers. However, it's not the default web browser on GNOME desktop environment nor is it installed out of the box with the Operating System. Read on below to learn more about this cool browser and how you can install it on your computer.

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

CouchDB is a free and open-source fault-tolerant NoSQL database maintained by the Apache Software Foundation.

Following yesterday's kernel security patch for Ubuntu 18.04 LTS (Bionic Beaver) systems, Canonical released today a new Linux kernel security patch for Ubuntu 18.10 (Cosmic Cuttlefish) users.

This article explains how to convert the pages of a PDF document to image files (PNG, JPEG, and others).

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 […]

The GNOME Project revealed the fact that the forthcoming GNOME 3.32 desktop environment will feature fractional scaling for HiDPI/4K displays, implemented in the GNOME Shell and Mutter components.