--output

• aws rds describe-db-instances --output table

 --output text
 --output json
 --output table
 --output yaml 
 --output yaml-stream 

Related

• cURL

See also

• AWS CLI, aws [ configure | iam | ec2 | ecs | eks | s3 | rds | sts | cloudwatch | cloudformation | cloudfront | eventbridge | lambda ], aws configure list, .aws/credentials, .aws/config, ~/.aws/cli/alias, --output [ table | json | text | XXX ], Aws cli environmental variables: AWS_PROFILE, AWS_DEFAULT_REGION, AWS_REGION, AWS_CLI_AUTO_PROMPT, AWS_SESSION_TOKEN, aws list all, auto-prompt, --version, whoamiaws, --filters, --help

https://docs.aws.amazon.com/cli/latest/userguide/cli-usage-output-format.html