refresh path in windows shell

reload-path.bat

@echo off
echo.
echo Refreshing PATH from registry
setlocal EnableDelayedExpansion
:: Get System PATH
for /f "tokens=3*" %%A in ('reg query "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v Path') do set syspath=%%A%%B

:: Get User Path
for /f "tokens=3*" %%A in ('reg query "HKCU\Environment" /v Path') do set userpath=%%A%%B

:: Set Refreshed Path
set PATH=%userpath%;%syspath%

echo Refreshed PATH

set OLD_PATH=%PATH%
...
set PATH=%OLD_PATH%;%userpath%;%syspath%
Вот так работает