md5filename.sh

#!/bin/bash

imgs=($(find . -type f))
imgc=${#imgs[@]}

for (( i=0; i<${imgc}; i++ ));
do
	img="${imgs[$i]}"
	sum=($(md5sum ${img}))
	ext=$(echo ${img} | sed 's/^.*\.//g')

	mv "${img}" "${sum}.${ext}"
done