#!/bin/bash
# 200k pictures in one directory. Whoops.

IN="./input"
OUT="./output"

for file in $(find "${IN}" -maxdepth 1 -type f -printf '%f\n'); do
    year=${file:0:4}
    month=${file:4:2}
    day=${file:6:2}
    echo $file $year $month $day

    source="${IN}/${file}"
    target="${OUT}/${year}/${month}/${day}/${file}"
    mkdir -p $(dirname "${target}")
    if [ ! -e "${target}" ]; then
        mv "${source}" "${target}"
    fi
done