Tutorials

4 Ways To Calculate A Running Total With SQL

Calculating a running total/rolling sum in SQL is a useful skill to have.  It can often come in handy for reporting and even when developing...
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Custom Linux Installations

Customize your Linux installation and gain working knowledge of your system at the same time. Most Linux users are content with a standard...
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ML
Machine learning already affects the way we live, make choices, and get entertained.

How Machine Learning Will Change Software Development

Artificial intelligence (AI) is not sci-fi anymore; machines have made their way into our lives with ever-increasing importance. Today, humans are...
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Your First Machine Learning Project in R Step-By-Step

Do you want to do machine learning using R, but you’re having trouble getting started? In this post you will complete your first machine learning...
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Working with the Container Storage Library and Tools in Red Hat Enterprise Linux

How containers are stored on disk is often a mystery to users working with the containers. In this post, we’re going to look at how containers images...
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High Reliability Infrastructure Migrations

On Tuesday I gave a talk at KubeCon called High Reliability Infrastructure Migrations. The abstract was: For companies with high availability...
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How to Set Up SELinux Right, the First Time

When you need to run Linux in an especially secure environment, SELinux is the answer. But it takes some know-how to get the hypersecure Linux...
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ss command
Learn how to use the ss command to gain information about your Linux machine and see what's going on with network connections.

An Introduction to the ss Command

Learn how to get network information using the ss command in this tutorial from the archives. Linux includes a fairly massive array of tools...
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How To Install Cinnamon Desktop On A Chromebook With Crouton

Crouton allows installing Ubuntu or Debian in a chroot environment on any Chromebook model, without removing Chrome OS. You can read more about...
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lets encrypt
Unencrypted HTTP sessions are wide open to abuse; lock them down with Let's Encrypt.

Protect Your Websites with Let's Encrypt

Learn how to use Let's Encrypt in this tutorial from our archives. Back in the bad old days, setting up basic HTTPS with a certificate authority cost...
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