List all Lambda runtimes used in all regions

lambda-runtimes.sh

#!/bin/bash

# all regions (2019/07/17)
regions=("ap-northeast-1" "ap-northeast-2" "ap-northeast-3" "ap-south-1" "ap-southeast-1" "ap-southeast-2" "ca-central-1" "eu-central-1" "eu-north-1" "eu-west-1" "eu-west-2" "eu-west-3" "sa-east-1" "us-east-1" "us-east-2" "us-west-1" "us-west-2")

for region in "${regions[@]}"
do
    echo "Lambda runtimes used in region ${region}"
    aws lambda list-functions --region ${region} | jq '.Functions[].Runtime' | sort | uniq  
done