指定したEC2インスタンスのEIPを開放するスクリプ

時代遅れだけど。

cat <<EOD | xargs aws ec2 describe-instances --instance-ids \
| jq '.Reservations[].Instances[] | select(has("PublicIpAddress")) | .PublicIpAddress' -r \
| tee \
>(xargs -I{} aws ec2 disassociate-address --public-ip {}) \
>(xargs -I{} aws ec2 describe-addresses --filter Name=public-ip,Values={} | jq '.Addresses[].AllocationId' -r | xargs -I{} aws ec2 release-address --allocation-id {})
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(好きなだけ改行区切りでどうぞ)
EOD