Variables often look like $var, but they also look like $1, $*, $? and $$. Let's take a look at what all these $ values can tell you. A lot of important values are ...

This post follows up on Part 1 by examining the many ways that you can test the value of variables – e.g., whether they equal particular strings like “yes” or “no”, if they have a numeric value, if ...

The command-line interface (CLI) is the cornerstone of interacting with the Linux operating system. It allows users to enter commands directly, offering greater control and flexibility compared to ...

In our first tutorial on command line wizardry, we covered simple redirection and the basics of sed, awk, and grep. Today, we’re going to introduce the concepts of simple variable substitution and ...

Accelerate your tech game Paid Content How the New Space Race Will Drive Innovation How the metaverse will change the future of work and society Managing the ...

Bash scripting is often seen as a convenient tool for automating repetitive tasks, managing simple file operations, or orchestrating basic system utilities. But beneath its surface lies a trove of ...

Skip one-click backup apps. This rsync script gives you full control over what gets saved and when, plus logs and a few hard-won lessons.