Crude script to sort a single folder of photos into year/month subfolders

organize_folder.sh

cd my_huge_DCIM_folder
for Y in {2017..2019} ; do
  echo "****** YEAR $Y ******"
  for M in {01..12} ; do
    echo "------ Month $M ------"
    mkdir -p "$Y/$M"
    mv IMG_${Y}${M}*.jpg "$Y/$M/"
    mv VID_${Y}${M}*.mp4 "$Y/$M/"
    mv PANO_${Y}${M}*.jpg "$Y/$M/"
  done
done