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 ...

Simply put, environment variables are variables that are set up in your shell when you log in. They are called “environment variables” because most of them affect the way your Unix shell works for you ...

Lifehacker reader Michael writes in with a nifty tip that was lurking in our comments all along, but deserves to see the bright light of posting. If you're already using the Unix-like Cygwin, it's an ...

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 ...

Editing your PC's environment variables can save you time in Command Prompt and make your scripts more concise. It also lets you customize where Windows stores certain files. This is what you need to ...

Environment variables are name-value pairs for various programs or processes on an operating system. On Windows, the environment variables store all sorts of information about the operating system ...