Returns a list of all direct connect gateway and virtual interface(VIF) attachments.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/directconnect/describe-direct-connect-gateway-attachments.html
| aws directconnect describe-direct-connect-gateway-attachments --direct-connect-gateway-id 5f294f92-bafb-4011-916d-9b0bexample |
| directconnect — AWS CLI 1.16.6 Command Reference : http://docs.aws.amazon.com/cli/latest/reference/directconnect/describe-direct-connect-gateway-attachments.html |