s3_bucket_sizes

s3_bucket_sizes

#!/bin/sh

# Report S3 bucket sizes

get_bucket_size() {
  bucket="$1"
  today=$(date +"%Y-%m-%d")
  if [ $(uname -s) = "Darwin" ]; then
    yesterday=$(date -v-1d +"%Y-%m-%d")
  else
    yesterday=$(date -d yesterday +"%Y-%m-%d")
  fi

  aws cloudwatch get-metric-statistics --namespace AWS/S3 \
    --start-time $yesterday --end-time $today --period 86400 \
    --statistics Average --metric-name BucketSizeBytes \
    --dimensions Name=BucketName,Value="$bucket" \
    Name=StorageType,Value=StandardStorage \
    | awk '/DATAPOINTS/ {printf("%.2f GB", $2/1024/1024/1024)}'
}

buckets=$(s3cmd ls |awk '{sub("^s3://","",$3); print $3}')

for bucket in $buckets; do
  echo "$bucket" $(get_bucket_size "$bucket")
done