What is the scope of environment variables in Windows PowerShell?

What is the scope of environment variables in Windows PowerShell?

In Windows PowerShell, environment variables can have different scopes: process, user, and machine. The process scope is temporary and only exists for the duration of the PowerShell session. User scope is specific to the current user, while machine scope applies to all users on the system.

How can I set an environment variable for the current session?

You can set an environment variable for the current session using the following command: $env:MY_VARIABLE = 'my_value'. This will only last for the duration of the session.

What about setting a user or machine variable?

To set a user environment variable, you can use: setx MY_VARIABLE 'my_value'. For a machine variable, you need to run PowerShell as an administrator and use the same command with the /M flag: setx MY_VARIABLE 'my_value' /M.

How do I view all environment variables?

You can view all environment variables by using the command Get-ChildItem Env: or simply gci env: in PowerShell.