In plain old make you use them the same way you use curly braces in shell scripts. If it is in a shell script, then the the parenthesis signify subshell evaluation.

A program (binary, or executable) is a file on disk somewhere, in a recognized format. Common formats include ELF on Linux, ...

One of the features I like about PowerShell is automatic variables. Automatic variables save you time and provide a more consistent approach at figuring out what's going on under the hood of your ...

Earlier, I showed you how to use the Get-VM cmdlet to retrieve a list of Hyper-V VMs. When you use the Get-VM cmdlet without any parameters, you will end up with a list of every VM on the server.

PowerShell can save you a lot of time on Windows admin tasks, but to use it effectively you need to understand how it works. Here's a crash course in Windows PowerShell scripting basics to get you ...

A special variable that I use with great frequency for helping create temporary file names is $$, which expands to the current process ID in the system. For example: $ echo $$ 3243 If you're doing a ...

Discover how to declutter and simplify your PowerShell scripts using switch statements, enhancing both readability and debuggability while learning tips for managing multiple and no-match scenarios.

You've now seen three different ways to test for the existence of a variable in your PowerShell scripts. You'll find that, depending on the situation, you'll use all three methods at one point in time ...

However, that’s by no means the full list of GitHub Actions environment variables available to developers when they create workflows on Ubuntu, Linus or MacOS. Each container where continuous ...