#!/bin/bash function listRes() { aws --region $1 ec2 describe-subnets | jq -cr '.Subnets[] | [.SubnetId, .VpcId, .CidrBlock, .AvailabilityZone] | @csv' | tr -d \" } export -f listRes # Generate inventory in all regions echo "SubnetId,VpcId,CidrBlock,AZ" aws --region=us-east-1 ec2 describe-regions --query Regions[].RegionName --output text | sed -e 's/\t/\n/g' | while read r; do sem -j6 listRes $r done sem --wait