Check the uses of an AMI in all configured AWS accounts

ami-usage.sh

#!/usr/bin/env bash

profiles="$((egrep '^\[ *[a-zA-Z0-9_-]+ *\]$' ~/.aws/credentials 2>/dev/null; grep '\[profile' ~/.aws/config 2>/dev/null | sed 's|\[profile ||g') | tr -d '[]' | sort | uniq)"

ami=$1

total_usages=0
ec2_usages() {
	usages=$(AWS_DEFAULT_PROFILE=$profile aws --output=json ec2 describe-instances | grep ImageId | sed  -n 's|.*"\(ami-[^"]*\).*|\1|p' | grep $ami | wc -l | tr -d " ")
	echo "$profile has $usages usages on ec2"
	total_usages=$(($total_usages+$usages))
}

launchconfig_usages() {
	usages=$(AWS_DEFAULT_PROFILE=$profile aws --output=json autoscaling describe-launch-configurations | grep ImageId | sed  -n 's|.*"\(ami-[^"]*\).*|\1|p' | grep $ami | wc -l | tr -d " ")
	echo "$profile has $usages usages on launchconfigurations"
	total_usages=$(($total_usages+$usages))
}

for profile in $profiles; do
	ec2_usages
	launchconfig_usages
done

echo ""
echo "Total usages: $total_usages"