How can I use PowerShell to make environment variables persistent?

How can I use PowerShell to make environment variables persistent?

You can use the Set-Item cmdlet to create or modify environment variables in PowerShell. To make them persistent, you can set them in the registry.

Can you show me an example of a script that does this?

Sure! Here's a simple script:

$envVarName = 'MyVariable'
$envVarValue = 'MyValue'
Set-Item -Path "HKCU:\Environment\$envVarName" -Value $envVarValue

Will this work for all users or just the current user?

This script sets the environment variable for the current user only. To set it for all users, you would use HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager\Environment instead.

How do I refresh the environment variables after setting them?

You can refresh the environment variables by either restarting the PowerShell session or using the command RefreshEnv if you have the chocolatey package manager installed.