You can also get a preview of the output of a command by calling the command with the --generate-cli-skeleton output option. This can speed up the process of combining CLI commands as you can see a response without actually calling the API:

$ aws ec2 describe-availability-zones --generate-cli-skeleton output 
{ 
  "AvailabilityZones": [ 
    { 
      "ZoneName": "ZoneName", 
      "State": "State", 
      "RegionName": "RegionName", 
      "Messages": [ 
        { 
          "Message": "Message" 
        } ] 
    } ] 
}