test $# = 0 && echo Usage: $0 {source file} {output directory} && exit 1

source_file=$1
output_dir=$2

original_file='/tmp/original'

cp $source_file $original_file

while true; do
    link=`awk 'NR<2' $source_file`
    [[ -z $link ]] && break
    awk 'NR>1' $source_file > /tmp/file
    wget $link -P $output_dir
    cp /tmp/file $source_file
done

cp $original_file $source_file
echo all done && exit 0