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Technology preview: Running a container inside a container

Watch this step-by-step tutorial on how to run a container inside of Podman in Red Hat Enterprise Linux 8.3.

Linux scripting: 3 how-tos for while loops in Bash

Three examples of using while loops to manage conditions that do not have a known limit

How I used Ansible to automate updates at home

Automation is not just for technology organizations anymore. You can use it anywhere, even at home.

How to install an Ansible collection on a disconnected Ansible control node

In this tutorial, I demonstrate how and where to install Ansible collections in an Ansible control node that has no internet access. The process is simple and straightforward, but some users are confused with the installation location and configuration.

The effects of adding users to a Linux system

When you add a new user to a Linux system, you also change several files. Do you know all of them?

Keeping Linux files and directories in sync with rsync

File synchronization made easy and efficient with rsync

Linux sysadmins: What's your favorite IDE?

If you program or script in Linux, what's your favorite IDE? The old standby vi or something a little newer?

Using Nmap results to help harden Linux systems

You don't know what's vulnerable until you know what's exposed. Nmap can help you find out what.

Building a Linux container by hand using namespaces

How user namespaces in Linux relate to container security.

How to configure network settings with Ansible system roles

In this part two of two articles, learn to configure network connections on managed nodes with Ansible system roles.

5 ways Red Hat Insights can improve your sysadmin life

Included with your Red Hat Enterprise Linux subscription, Red Hat Insights can improve your life as a sysadmin.

How to create your WordPress developer stack on OpenShift 4

Learn how to deploy your WordPress developer stack on OpenShift 4 by using tools such as Nginx, Php-fpm, Phpmyadmin, Mariadb, Red Hat CodeReady, and Tekton.

Add these 4 tools to your Linux container toolbox

New options for building container images, find tags in Podman, and using the Skopeo container image are some new features for you to use in your container adventures.

How to use the sipcalc Linux command line tool

The sipcalc command prevents hard CIDR calculations and helps your fellow sysadmins adhere to the CIDR house rules.

6 resources and 3 tips to help you enter the world of Linux containers

Here are some tips, ideas, and resources to help you develop your container vocabulary and start working with this useful technology.

Resilient sysadmin: 5 tips for success in a remote work environment

Here are five in-the-trenches tips on how to cope with your work from home life.

8 Tips for reliable automation for Linux container builds

Reducing complexity can streamline and smooth the automation pipeline.

DevSecOps: Image scanning in your pipelines using quay.io scanner

In this first of two articles, learn to add image scanning to pipelines using quay.io built-in capabilities.

Basic concepts of encryption in cryptography

To make your way in the IT industry, a fundamental understanding of cryptography concepts is vital. However, many still struggle when it comes to handling TLS certificates, certificate requests, and all sorts of keys. Part one in a series on encryption concepts.

Sysadmin careers: How long do you typically stay in a job?

Some sysadmins change jobs often, while some of us stay too long in one place. Where do you fall on the job change continuum?

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