#!/bin/bash

[ -d rotated ] || mkdir rotated

for jpf in *.jpg; do
	echo $jpf
	exiftool -Orientation "$jpf" | grep "Horizontal (normal)"
	if [ $? -eq 1 ]; then
		convert "$jpf" -auto-orient "rotated/$jpf"
		touch -r "$jpf" "rotated/$jpf"
	fi
done