An Introduction to Cybersecurity: The First Five Steps

If you’re just starting to take cybersecurity seriously, here are five steps you can take to secure your organization more effectively than 99 percent of your competitors. Learn More

Sysadmin guides, open source email clients, MacOS apps, SELinux, Firefox extensions, and more

Reader favorites from last week included articles for sysadmins, Linux games, tool round ups, and more. Learn More

A sysadmin's guide to SELinux: 42 answers to the big questions

Faced with this dilemma, some sysadmins decide to take the blue pill because they think they will never know the answer to the big question of life, the universe, and everything else. And, as we all know, that answer is ... Learn More

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Get our Linux networking cheat sheet

If your daily tasks include managing servers and the data center's network. The following Linux utilities and commands—from basic to advanced—will help make network management easier.

In several of these commands, you'll see , which stands for "fully qualified domain name." When you see this, substitute your website URL or your server (e.g., server-name.company.com), as the case may be. Learn More

Containers or virtual machines: ​Which is more secure? The answer will surprise you

Are virtual machines (VM) more secure than containers? You may think you know the answer, but IBM Research has found containers can be as secure, or more secure, than VMs.

James Bottomley, an IBM Research Distinguished Engineer and top Linux kernel developer, writes:

Linux history Command Tutorial for Beginners (8 Examples)

If your work involves running tools and scripts on the Linux command line, I am sure there are a lot of commands you would be running each day. Those new to the command line should know there exists a tool - dubbed history - that gives you a list of commands you've executed earlier. Learn More

How To Install Ruby on Ubuntu 18.04

This tutorial covers how to install Ruby on a Ubuntu 18.04 system. Ruby is one of the most popular languages today. It has an elegant syntax and it is the language behind the Ruby on Rails framework. Learn More

Linux Mint 19 “Tara” Now Available to Download as Cinnamon, MATE & Xfce Editions

The Linux Mint 19 “Tara” operating system is now available to download ahead of the official release later this week as Cinnamon, MATE, and Xfce editions for both 32-bit and 64-bit architectures. Learn More

Linux dpkg Command Tutorial for Beginners (8 Examples)

If you are on a Debian or Debian-based system (like Ubuntu), there are high chances you might have encountered .deb packages. These are Debian packages, and Linux command line offers built-in commands/tools to deal with this kind of packages. One such tool is dpkg, which we will discuss here in this tutorial. Learn More

How to Create Custom Commands in Linux

In this tutorial, We’ll show you how to create custom commands in Linux which will allow you to create “shortcut” commands using a simple name of your choosing. Even better, you can chain multiple commands like this together and run them all with a single word. Useful, right? As you get more and more acquainted with Linux, you’ll come across commands in forums and tutorials that can be really complex (and weird). Learn More

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