basenumber=28
date=$(date "+%Y%m%d%H%M%S")
for file in *.tif
do
    basenumber=$(printf "%02d " "$basenumber")
    #mv "$file" "$((basenumber))_$file"
    echo "$((date))_$((basenumber))_$file"
    basenumber=$((basenumber-1))
done