Command option Sample:aws resource-groups update-group

Search command sample in the internet.It is the result.

Updates an existing group with a new or changed description.Show details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/resource-groups/update-group.html

aws resource-groups update-group --group-name resource-group-name --description "description_text"
    What Is AWS Resource Groups? - AWS Resource Groups : http://docs.aws.amazon.com/ARG/latest/userguide/updating-resource-groups.html

aws のオプション一覧