If you're working in a Linux environment, chances are you've encountered environment variables—even if you didn’t realize it at the time. They quietly power much of what goes on behind the scenes in ...

Claim your complimentary copy (valued at $35.99) for free before the offer expires on April 9. Dive into the world of Linux shell scripting with this hands-on guide. If you’re comfortable using the ...

I’m going to go ahead and admit it: I really have too many tray icons. You know the ones. They sit on your taskbar, perhaps doing something in the background or, at least, giving you fingertip access ...

Bash, and other shells like zsh, support several test operators that you can use to check conditions: whether something is a file, or if one number is larger than another, for example. These tests are ...

One of the first commands new Linux users learn is echo. Need to print some text or debug a script? Add an echo statement. However, from my usage, I've found printf to be far more powerful. Once you ...