A nushell oneliner to list all AWS VPC, for all accounts, in all regions #shell #oneliner #nushell

nu-all-aws-vpcs-all-accounts-all-regions.md

Get all AWS VPCs, for all accounts, in all regions, in nushell

The cool thing about this script is that it uses par-each to run the aws commands in parallel and collecting the results. Do you know how hard that is to do in bash?!

Warning

This script assumes that you have 1 profile entry for each AWS account of the form <account alias>/aws-read-only. Adapt as needed.

aws configure list-profiles | grep aws-read-only | lines | par-each {|profile|
    let account = $profile | split row '/' | first
    aws --profile $profile ec2 describe-regions --output json | from json | get Regions | par-each {|elem|
        print --stderr $"Getting VPCs for ($profile) in ($elem.RegionName)"
        aws --profile $profile --region $elem.RegionName ec2 describe-vpcs --output json | from json | get Vpcs
            | where IsDefault == false
            | default [] Tags
            | select CidrBlock Tags
            | insert account $account
            | insert region $elem.RegionName
            | update Tags {where $it.Key == Name | get 0?.Value}
    } | flatten
} | flatten | sort-by CidrBlock