odps-auth:tldr:30cb5

The command "desc role ${role_name};" is used to describe or display the details of a specific role in a database system.

Here's a breakdown of the command:

1. "desc": It is short for "describe", and it instructs the database system to provide the metadata or structure information about a specific database object.

2. "role": It refers to a database role, which is a named group of database users with certain privileges and permissions.

3. "${role_name}": This is a placeholder or variable that should be replaced with the actual name of the role you want to describe. For example, if you want to describe a role named "admin", you would use "desc role admin;".

Overall, this command allows you to retrieve information about a particular database role, such as the role name, role members, and any associated privileges or permissions.