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 ...

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 ...

In Jack Wallen’s tutorial for developers, he show how easy it is to set temporary environment variables in Linux. Did you know that you can set temporary environment variables on the Linux operating ...