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First Look: Tuxedo InfinityCube Linux Desktop PC With Intel Core-i7 8700

I've played with Linux on several of my own machines, but I recently unboxed my first custom-built Linux PC courtesy of Tuxedo Computers. It's called the InfinityCube v9, and it's left me very impressed. In fact I've been leaning on it more than the beefy AMD Ryzen 1950X rig I built because it's...
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Getting Started with the cat Command

The Linux cat and zcat commands are more useful than you may realize. Cat is a fairly simple tool designed to concatenate and write file(s) to your screen, which is known as standard output (stdout). It is part of the GNU Core Utils released under the GPLv3+ license. You can expect to find it in...
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The Monty Hall Problem

The original and most simple scenario of the Monty Hall problem is this: You are in a prize contest and in front of you there are three doors (A, B and C). Behind one of the doors is a prize (Car), while behind others is a loss (Goat). You first choose a door (let’s say door A). The contest host...
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Runc and CVE-2019-5736

This morning a container escape vulnerability in runc was announced. We wanted to provide some guidance to Kubernetes users to ensure everyone is safe and secure. What Is Runc? Very briefly, runc is the low-level tool which does the heavy lifting of spawning a Linux container. Other tools like...
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Building Trust in Open Source: A Look Inside the OpenChain Project

Open source software provides businesses with a number of benefits including cost, flexibility and freedom. This freely distributed software can also be easily altered by any business that is familiar with its source code.  However, licensing issues do arise which could present a major hurdle for...
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Microsoft Joins OpenChain Open-Source Compliance Group

OpenChain, I would argue, is the most important open-source project you've never heard of before. This Linux Foundationconsortium provides an industry standard for open-source supply chain license compliance. And now, Microsoft has joined the the OpenChain Project. OpenChain's important because the...
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Kubernetes, Docker, ContainerD Impacted by RunC Container Runtime Bug

The Linux community is dealing with another security flaw, with the latest bug impacting the runC container runtime that underpins Docker, cri-o, containerd, and Kubernetes. The bug, dubbed CVE-2019-5736, allows an infected container to overwrite the host runC binary and gain root-level code access...
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Performance Monitoring with OpenTracing, OpenCensus, and OpenMetrics

If you are familiar with instrumenting applications, you may have heard of OpenMetrics, OpenTracing, and OpenCensus. These projects aim to create standards for application performance monitoring and collecting metric data. Although the projects do overlap in terms of their goals, they each take a...
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Disk Encryption for Low-End Hardware

Eric Biggers and Paul Crowley were unhappy with the disk encryption options available for Android on low-end phones and watches. For them, it was an ethical issue. Eric said: We believe encryption is for everyone, not just those who can afford it. And while it's unknown how long CPUs without AES...
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Testing, One Two Three: How These OPNFV Tools Can Help Any Open Infrastructure Project

As the number of open-source projects booms, so does the need for resiliency and interoperability testing. The Open Platform for NFV (OPNFV) community spent about four years of collective brainpower developing testing tools that can come in handy for open-source projects. Here’s a brief overview of...
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