aws cli command for list of elastic ip address that are not in use?

Question

我需要编写一个Shell脚本来查找任何实例未使用的Elastic ip地址列表，并且需要将免费ip关联到我新启动的实例。

Answer 1

You can use this aws cli to get all the elastic Ip's that are not in use.

aws ec2 describe-addresses --query "Addresses[?NetworkInterfaceId == null ].PublicIp"

If you need output in text format just append --output text to the CLI.

You can then similarly use the cli to launch a new EC2. Refer the cli https://docs.aws.amazon.com/cli/latest/reference/ec2/run-instances.html on details around launching an instance.