To generate a sample JSON object that will be accepted, run the command with the --generate-cli-skeleton option:
$ aws ec2 describe-availability-zones --generate-cli-skeleton { "DryRun": true, "ZoneNames": [ "" ], "Filters": [ { "Name": "", "Values": [ "" ] } ] }
You can then copy, edit, and use this object to define your command options without passing lots of individual options. It works best for commands with arrays of options or a variable number of options.
