s3calc

gistfile1.txt

#!/bin/bash

regex='(s3)://[-A-Za-z0-9\+&@#/%?=~_|!:,.;]*[-A-Za-z0-9\+&@#/%=~_|]'

if [[ $@  =~ $regex ]]
then 
    aws s3 ls $@ --recursive | grep -v -E "(Bucket: |Prefix: |LastWriteTime|^$|--)" | awk 'BEGIN {total=0}{total+=$3}END{print total/1024/1024/1024" GB"}'
else
    echo "format err, input e.g. s3://bucket/path/to/calc"
    exit 1
fi