The eval command allows you to run the contents of variables as commands and can be very useful -- especially in scripts.

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 ...

Learn how to set the PATH variable in macOS. The PATH variable is a file system environment variable that contains the location of commands and program files. In this article, you’ll learn how ...

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 pass variables. Here's a very ...

The Environ$ function is use to receive the value of an environment variable. For example, when you used the WINDIR command (Windows), you would have obtained the folder where Windows is installed (C: ...

Java is a very extensively used programming language. In this article, we explain how you can run Java programs from the Command Prompt.

Mathematical programming discriminant analysis models must be normalised to prevent the generation of discriminant functions in which the variable coefficients and the constant term are zero. This ...

Why Would You Want to Set the PATH Variable? 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.