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On Linux, you may have used a package manager to install or remove packages. For example, the default package manager on Debian Linux is the deb command, and the default package manager on Fedora Linux is the dnf command. But did you know that FreeDOS has a package manager, too? read more

Do you ever feel nostalgic for Doom and other blocky video games, the ones that didn't require much more than a mouse and the hope that you could survive on a LAN with your friends? You know what I'm talking about; the days when your weekends were consumed with figuring out how you could travel with your desktop and how many Mountain Dews you could fit in your cargo pants pockets? If this memory puts a warm feeling in your heart, well, this article is for you. read more

In this series celebrating Kubernetes' 11th birthday, I've introduced some great tools for chaos engineering. In the first article, I explained what chaos engineering is, and in the second, I demonstrated how to get your system's steady state so that you can compare it against a chaos state. read more

The rising popularity of serverless development alongside the increased adoption of multi- and hybrid-cloud architectures has created a lot of competition among platforms. This gives developers many choices about where they can run functions on serverless platforms—from public managed services to on-premises Kubernetes. read more

The main configuration file for FreeDOS is a file in the root directory called FDCONFIG.SYS. This file contains a series of lines, each setting a value such as LASTDRIVE=Z or FILES=40. For example, the default FDCONFIG.SYS in FreeDOS 1.3 RC4 looks like this: read more

Let's face it. The point of technology is to make life better. Of course, what qualifies as "better" varies for people, depending on what they need at any given moment. Still, technology has the unique ability to affect lives at many different stages. For some people, technology offers a relaxing afternoon of entertainment, while for others, it provides navigational assistance, improved health care, or more precise scientific research. read more

Use cpulimit to easily limit the percentage of CPU cycles that a process can allocate per unit of time.

Modoboa is an open-source mail server hosting and management platform for Linux. It is written in Python uses Postfix, and Dovecot to send and receive email. In this tutorial, I will show you how to install Modoboa on Debian 10 server.

SolidRun’s tiny “CN9130 Mini SoM” runs Linux on Marvell’s 2.2GHz, quad -A72 Octeon TX2 CN9130 and powers new ClearFog CN9130 Base and Pro SBCs with up to 5x switched GbE, SFP+, M.2, 2x mini-PCIe, and optional enclosures. Over the years, SolidRun’s ClearFog line of networking modules, boards, and appliances have showcased various Marvell networking SoCs […]

Preparing to run a new (or convert an existing) application in Kubernetes takes work. Working with Kubernetes requires defining and creating multiple "manifests" for the different types of objects in your application. Even a simple microservice is likely to have a deployment.yaml, service.yaml, configmap.yaml, and other files. These declarative YAML files for Kubernetes are usually known as "manifests." You might also have to set up secrets, ingresses, persistent volumes, and other supporting pieces.

Have you wanted to cause chaos to test your systems but prefer to use visual tools rather than the terminal? Well, this article is for you, my friend.

Summer is here, which means it’s time for summer school! Take advantage of longer days and more downtime by gaining new open source skills to advance your career prospects. With the Open Source Jobs Report finding 93% of hiring managers are having a difficult time filling positions requiring these skills, now is the time to […]

With Firefox, getting around the internet is fast, straight-forward and easy. Now you can go beyond the basics with these secret and not-so-secret tricks that make your internetting experience even more fun. Read on for some of our favorite Firefox features that you may not know about… yet. 1. Send tabs across the room If […]

Detecting vulnerabilities and managing the associated patching is challenging even in a small-scale Linux environment. Scale things up and the challenge becomes almost unsurmountable. There are approaches that help, but these approaches are unevenly applied. In our survey, State of Enterprise Vulnerability Detection and Patch Management, we set out to investigate how large organizations handle the dual, linked security concerns of vulnerability detection and patch management.

The Linux Foundation Public Health is releasing the infrastructure for the first international COVID-19 passport. It's being considered for use by both the United Nations and the European Union.

One thing I appreciate from growing up with DOS computers is that the boot process is relatively easy to understand. There aren't a lot of moving parts in DOS. And today, I'd like to share an overview of how your computer boots up and starts a simple operating system like FreeDOS. read more

Compiling source code produces a binary. During compilation, you can provide flags to the compiler to enable or disable certain properties on the binary. Some of these properties are relevant to security. Checksec is a nifty little tool (and shell script) that, among other functions, identifies the security properties that were built into a binary when it was compiled. A compiler might enable some of these properties by default, and you might have to provide specific flags to enable others. read more

Even if you haven't used DOS before, you are probably aware of its command-line shell, named simply COMMAND.COM. The COMMAND.COM shell has become synonymous with DOS, and so it's no surprise that FreeDOS also implements a similar shell called "FreeCOM"—but named COMMAND.COM just as on other DOS systems. read more

Axiomtek’s rugged, robotics focused “AIE900A-NX” edge AI system runs Ubuntu on a Jetson Xavier NX and supplies 4x PoE ports plus GbE, HDMI, MIPI-CSI, DIO, serial, CAN, 2x USB 3.1 Gen2, mini-PCIe, and 2x M.2. Axiomtek has added to its line of edge AI systems built around Nvidia’s Jetson Xavier NX module, including its general […]

Load balancing and clustering are very important in a production environment to achieve high availability for your database system. In this post, we will show how to set up a three-node MariaDB Galera cluster on Ubuntu 20.04 server.