#!/bin/bash
for A; do
	echo "processing $A"
	first=$(ls "$A"/*.jpg | head -n1)
	last=$(ls "$A"/*.jpg | tail -n1)
	if [ -n "$first" ]; then
		first_date=$(exifdate "$first")
		last_date=$(exifdate "$last")
		if [ -n "$first_date" ]; then
			v mv -iv "$A" "${first_date}_${last_date}_$A"
		fi
	fi
done