Dave McKay

You can configure IP addresses, network interfaces, and routing rules on the fly with the Linux ip command. We’ll show you how you can use this modern replacement of the classic (and now deprecated) ifconfig….

When you type a command in a terminal window and press Enter, you kick off quite a lot of activity before your command is even executed.

You can use the Linux traceroute command to spot the slow leg of a network packet’s journey and troubleshoot sluggish network connections. We’ll show you how!

SUID, SGID, and Sticky Bits are powerful special permissions you can set for executables and directories on Linux. We’ll share the benefits—and potential pitfalls—of using them.

On Linux, awk is a command-line text manipulation dynamo, as well as a powerful scripting language. Here’s an introduction to some of its coolest features.

Deleting a user on Linux involves more than you think. If you’re a system administrator, you’ll want to purge all traces of the account and its access from your systems. We’ll show you the steps to take….

If you want to merge data from two text files by matching a common field, you can use the Linux join command. It adds a sprinkle of dynamism to your static data files. We’ll show you how to use it.

The Linux netstat command gives you a treasure-trove of information about your network connections, the ports that are in use, and the processes using them. Learn how to use it.

JSON is one of the most popular formats for transferring text-based data around the web. It’s everywhere, and you’re bound to come across it. We’ll show you how to handle it from the Linux command line using the jq command….

When does “changed” not mean “modified”? When we’re talking about Linux file timestamps. In this guide, we’ll explain how the system updates them, and how to alter them yourself.

The Linux fold command brings unruly output to heel. Read wide chunks of text, endless strings, and unformatted streams by controlling the width of the output. Learn how.

The Linux uniq command whips through your text files looking for unique or duplicate lines. In this guide, we cover its versatility and features, as well as how you can make the most of this nifty utility….

Need to identify the Graphics Processing Unit (GPU) in a Linux computer? Here’s how you can identify the graphics card from the command line and in GNOME.

Linux’s shell saves a history of the commands you run, and you can search it to repeat commands you’ve run in the past. Once you understand the Linux history command and how to use it, it can significantly boost your producti…

If you want to schedule a Linux job that will happen only once, cron is overkill. The at family of commands is what you need! And if you want to run processes only when your system has free resources, you can use batch….