AWS instance id, ami id and creation date using shell script with array usage and for loop.

 region_name=("us-east-1" "eu-north-1" "ap-south-1"  "eu-west-3" "eu-west-2" "eu-west-1" "ap-northeast-3" "ap-northeast-2" "ap-northeast-1" "sa-east-1" "ca-central-1" "ap-southeast-1" "ap-southeast-2" "eu-central-1" "us-east-1" "us-east-2" "us-west-1" "us-west-2")
for region in "${region_name[@]}"
 do
  :
array_us_east_1=($(aws ec2 describe-instances --filters Name=instance-state-name,Values=running,stopped --query "Reservations[*].Instances[*].InstanceId" --output text --region $region))
  for instance_id in "${array_us_east_1[@]}"
 do
   :
   echo "InstanceId :" $instance_id
   ami_id_us_east_1=($(aws ec2 describe-instances --instance-id  $instance_id --region $region  --query Reservations[].Instances[].[ImageId] --output text))
    for ami_id in "${ami_id_us_east_1[@]}"
   do
    :
    echo "AMI ID :" $ami_id
    ami_creation_date=($(aws ec2 describe-images --image-ids $ami_id --query 'Images[*].[CreationDate]' --region $region  --output text))
     for ami_generated_date in "${ami_creation_date[@]}"
    do
     :
     echo "AMI Created :" $ami_generated_date
     echo "+++++++++++++++++++++++++++++++++++"
     done    
    done
 done;
 done;