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 ...

Why Do You Need to Set the PATH Environment Variable? On macOS, when you run a command in the terminal, it searches for the path of the requested program in that command inside the PATH ...

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 ...

PATH is an essential environment variable on all Windows operating systems. It determines the way a system executes a program or command on your computer. Typically, when you have to launch a ...

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 ...

Bash functions, unlike functions in most programming languages do not allow you ... To return values, you can set a global variable with the result, or use command substitution, or you can pass in the ...

To make things simple, all you have to do is install FFmpeg and add the FFmpeg program to the Windows path using Environment variables. This way you can directly access FFmpeg from a Command ...

In this article, we will dive into several methods for dividing variables in Bash, and you'll discover how to handle the lack of floating-point division in Bash. However, the expr command has ...