Listout aws ec2 machines.

1. aws ec2 describe-instances --filters "Name=instance-type,Values=t2.micro" --query "Reservations[].Instances[].InstanceId"

2. aws ec2 describe-instances --filters "Name=instance-type,Values=t2.medium" --query "Reservations[].Instances[].InstanceId"

3.To list out security groups

aws ec2 describe-security-groups --group-ids

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