Find Amazon S3 bucket usage

s3size.sh

function s3size() {     
    for path in $*; do         
        size=$(aws s3 ls "s3://$path" --recursive | grep -v -E "(Bucket: |Prefix: |LastWriteTime|^$|--)" | awk 'BEGIN {total=0}{total+=$3}END{printf "%.2fGb\n", (total/1024/1024/1024)}');         
        echo "[s3://$path]=[$size]";     
    done; 
}