How do I modify environment variables using PowerShell?

How do I modify environment variables using PowerShell?

You can modify environment variables in PowerShell using the $env: prefix. For example, to change the PATH variable, you can use $env:Path = 'C:\NewPath;' + $env:Path.

Can I add a new variable instead of modifying an existing one?

Yes, you can create a new environment variable using the [System.Environment]::SetEnvironmentVariable method. For example: [System.Environment]::SetEnvironmentVariable('MyVar', 'MyValue', 'User').

How do I check if my variable was set correctly?

You can check if your variable was set by using Get-ChildItem Env: to list all environment variables or by accessing it directly with $env:MyVar.

Is there a way to make the changes permanent?

To make changes permanent, you should set the environment variable at the system or user level using the SetEnvironmentVariable method with the appropriate scope.