It renames files from directories as last directory + increasing number on every folder the index is reset

rename-numbered

#/usr/bin/bash

path=
i=0
prevname=
for file in */*/*/*.jpg; do
    path="${file%/*}"
    name=`basename "$path"`
    if [ "$name" == "$prevname" ]; then
        i=`expr $i + 1`
    else
        i=1
        prevname="$name"
    fi
    mv "$file" "$path"/"$name $i"
done