#!/bin/sh
(( nrfile = 1 ))
for file in DSC*.JPG; do
   if [ $nrfile -lt 10 ]; then	
		cp ${file} 0${nrfile}.jpg
	fi
	if [ $nrfile -gt 9 ] && [ $nrfile -lt 100 ]; then
		cp ${file} ${nrfile}.jpg
	fi
	(( nrfile++ ))
done