File jpeg files in sub dir from name

file.sh

#!/bin/bash
for f in *.jpg
do
   y=$( echo $f | sed 's/\([0-9]*\)-\([0-9]*\)-\([0-9]*\)_.*/\1/')
   m=$( echo $f | sed 's/\([0-9]*\)-\([0-9]*\)-\([0-9]*\)_.*/\2/')
   [ -d $y ] || mkdir $y
   [ -d "$y/$m" ] || mkdir "$y/$m"
   mv $f "./$y/$m"
   echo "$f moved to $y/$m"
done