jpg to bmp

ren *.jpg *.bmp


REN multiple Files

echo OFF
echo.
echo.=======================
echo.
echo This batch program
echo RenAmE Multiple FILES
echo.
echo.
echo.=======================
echo.
echo on

ren test?* dimm?*
pause
ren dimm?* test?*
pause
ren test?* dimm?*
ren dimm?* t?*
ren t?* DIMM_?*

Rename (ren)