EC2 AMI retention

EC2_AMI_retention.sh

#!/bin/sh 


date=`date +%Y-%m-%d -d "30 day ago"`


for region in us-east-1 us-west-2 ; do 
  aws ec2 describe-images --region $region --owners self --output text --filters 'Name=name,Values=IMAGE-NAME-*' --query 'Images[?CreationDate<=`'${date}'`][ImageId]' | grep -v `aws ec2 describe-instances --region $region --output text --filters 'Name=tag:Name,Values=IGNORE-STRING-*' --query 'Reservations[*].Instances[*].[ImageId]' | sed -n 1p` > remove_ami-$region.txt
    for remove in `cat remove_ami-$region.txt` ; do 
      aws ec2 deregister-image --region $region --image-id $remove
    done
done