#!/bin/bash

set=0
if [ z"$1" == z--set ]; then
    shift
    set=1
fi

for file in "$@" 
do
    year=unknown
    year=`echo $file | sed 's/.*\([0-9][0-9][0-9][0-9]\).*/\1/'`
    echo "$year for $file"
    if [ $set -gt 0 ]; then
	id3 -y $year "$file"
	id3v2 -y $year "$file"
    fi
done