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 ...

How to Set Temporary Environment Variables in Linux (+Video Tutorial) Your email has been sent In Jack Wallen's tutorial for developers, he show how easy it is to set temporary environment variables ...

The eval command allows you to run the contents of variables as commands and can be very useful, especially in scripts. There are probably a lot of Linux users who have never encountered the eval ...

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 ...