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| #!/usr/bin/env bash | |
| printUsage() { | |
| cat <<EOT | |
| Usage: $0 aws-region-name instance-type | |
| aws-region-name: Name of the AWS region (e.g. eu-west-1) | |
| instance-type: Either "ec2" or "ecs" | |
| EOT | |
| } | |
| [ -z "$1" ] && echo "Error: Missing aws region parameter" && printUsage && exit 1 | |
| [ -z "$2" ] && echo "Error: Missing aws instance-type parameter" && printUsage && exit 1 | |
| AWS_REGION=$1 | |
| AWS_INSTANCE_TYPE=$2 | |
| ECS_INSTANCE_SUFFIX="*-amazon-ecs-optimized" | |
| EC2_INSTANCE_SUFFIX="hvm-*-gp2" | |
| if [ $AWS_INSTANCE_TYPE == "ec2" ]; then | |
| NAME_FILTER=$EC2_INSTANCE_SUFFIX | |
| else | |
| NAME_FILTER=$ECS_INSTANCE_SUFFIX | |
| fi | |
| aws ec2 describe-images --region ${AWS_REGION} --owners amazon --filters "Name=name,Values=amzn-ami-${NAME_FILTER}" \ | |
| 'Name=state,Values=available' | jq -r '.Images | sort_by(.CreationDate) | last(.[]).ImageId' |
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