The Linux command line is a powerful tool that gives you complete control over your system. But to unleash its full potential, you must understand the environment in which it operates. One crucial ...

In this tutorial we will be using /bin/bash and it will be denoted as #!/bin/bash which is called a shebang! Next, we will be using an internal Bash function - a shell variable named RANDOM. It ...

There are quite a few ways to increment and decrement numeric variables in bash. This post examines the many ways you can do this.

If you aren’t a Linux user and you watch someone who knows what they are doing use Bash — the popular command line interpreter — you might get the impression they type much faster than they ...

Jack Wallen introduces you to Linux environment variables. What are they and how are they set and unset?

The command line isn't just for wise Linux beards. It's actually an awesome tool with almost limitless functionality. Here's a primer on how it works, ...