YY='1995'
echo $YY
mv ddforecast_y${YY}m1.txt ddforecast_y${YY}m01.txt
mv ddforecast_y${YY}m2.txt ddforecast_y${YY}m02.txt
mv ddforecast_y${YY}m3.txt ddforecast_y${YY}m03.txt
mv ddforecast_y${YY}m4.txt ddforecast_y${YY}m04.txt
mv ddforecast_y${YY}m5.txt ddforecast_y${YY}m05.txt
mv ddforecast_y${YY}m6.txt ddforecast_y${YY}m06.txt
mv ddforecast_y${YY}m7.txt ddforecast_y${YY}m07.txt
mv ddforecast_y${YY}m8.txt ddforecast_y${YY}m08.txt
mv ddforecast_y${YY}m9.txt ddforecast_y${YY}m09.txt