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 ...

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 ...

Executing programs via the terminal is a quick and efficient way of carrying out operations on your Mac. It offers extended functionality and granular control over the program’s functionality and ...

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 ...

I'm working on some scripts that execute on various servers, and I'm trying to consolidate them into one. The problem is that I need to run remote commands but can't ...

If you want to see or check the names and values of Environment Variables in Windows 11 or Windows 10, here is how you can do that. There are mainly four ways to find almost everything about the ...

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 ...

The "My Documents" folder path contains a variable username component and changes from one user to another. It is possible to write a code in VBA or VB6 to access the "My Documents" folder regardless ...

I am sure you had tried launching programs like ‘CMD’ and ‘DISM’ directly from the Run prompt. Have you ever wondered how they launched instantly? How is Windows OS able to find where it’s located? A ...