Created
September 9, 2015 05:44
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unused aws vpc security group assuming all securitry groups are used by either RDS or EC2
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| comm -23 <(aws --region us-east-1 ec2 describe-security-groups --query 'SecurityGroups[*].GroupId' --output text | tr '\t' '\n'| sort) <(((aws --region us-east-1 ec2 describe-instances --query 'Reservations[*].Instances[*].SecurityGroups[*].GroupId' --output text | tr '\t' '\n') ; (aws --region us-east-1 rds describe-db-instances --query 'DBInstances[*].VpcSecurityGroups[*].VpcSecurityGroupId' --output text | tr '\t' '\n')) | sort | uniq) |
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