CMD - Display environment variables
set | more
$Env:path += ";c:\temp"
Set the system PATH
setx path "%path%;c:\directoryPath"
set vs setx
set sets an environment variable until the end of the current command prompt session, or until you set the variable to a different value
setx sets an environment variable in both the current command shell and all command shells that you create after running the command. It does not affect other command shells that are already running at the time you run the command.