Amazon EC2 returns a table that contains the following information:
Output type identifier ("ADDRESS")
Elastic IP address assigned to your account
Instance ID to which the IP address is assigned
Amazon EC2 displays errors on stderr.
This example returns elastic IP addresses assigned to the account.
$ec2-describe-addresses
Amazon EC2 returns 67.202.55.255 which is assigned to instance i-f15ebb98
and 67.202.55.233 which is not assigned to an instance.
ADDRESS 67.202.55.255 i-f15ebb98
ADDRESS 67.202.55.233