#!/bin/ksh

jpg=${1:-"*.jpg"}

for i in $jpg
do
  # timestamp the file with the exif date
  # use exiftool, jhead, or whatever exif extration
  # tool you like
#  echo "doing $i"
  time=`exiftool -d '%c' -DateTimeOriginal $i | sed 's/.* ://'`
#  echo "using time $time"
  # time=`jhead $i | grep "Date/Time" | sed 's/.* ://'`

  touch -d "$time" $i
#  echo "done"
done