[Foreigner]

Код:

@echo off

for %%i in ("unr=Maps" "utx=Textures" "umx=Music" "u=System" "txt=Help" "htm=Help" "html=Help" "jpg=Screenshots" "bmp=Screenshots") do (

    for /f "tokens=1,2 delims==" %%j in (%%i) do (

        if exist *.%%j (        

            2>nul md "%%k"
            move *.%%j "%%k"

)))