tmp=`mktemp`
trap "rm -f $tmp.jpg" HUP PIPE INT QUIT TERM EXIT
jpegtran -optimize -progressive -perfect -copy all "$1" > $tmp.jpg
tmp=`mktemp`
trap "rm -f $tmp.jpg" HUP PIPE INT QUIT TERM EXIT
jpegtran -optimize -progressive -perfect -copy all "$1" > $tmp.jpg