List all CloudFormation stacks in all enabled regions

list-all-cloudformation-stacks.sh

#!/usr/bin/env bash
#
# Script that uses the AWS CLI to list all active CloudFormation stacks
# in all enabled regions.
#
set -euo pipefail
IFS=$'\n\t'

regions="$(aws account list-regions --region-opt-status-contains "ENABLED" "ENABLED_BY_DEFAULT" --query "Regions[].[RegionName]" --output text && printf '\0')"
read -r -d '' -a regions < <(aws account list-regions --region-opt-status-contains "ENABLED" "ENABLED_BY_DEFAULT" --query "Regions[].[RegionName]" --output text && printf '\0')

for region in "${regions[@]}"; do
  echo "[$region] Finding CloudFormation Stacks"
  read -r -d '' -a stacks < <(aws cloudformation list-stacks --region "$region" --query "StackSummaries[?!contains(keys(@), 'DeletionTime')].[StackName]" --output text && printf '\0')
  test -z "${stacks:-}" && continue
  for stack in "${stacks[@]}"; do
    echo "  $stack"
  done
done