find . -mindepth 2 -maxdepth 2 -a -type d -print  -o -wholename './Thumbnails' -prune|sort>lijstalfabet.txt
find . -mindepth 2 -maxdepth 2 -a -type d -printf '%TY%Tm%Td %p\n'  -o -wholename './Thumbnails' -prune|sort -r > lijstdatum.txt