The previous examples of role definitions granted broad privileges. You can also use role definitions to grant or deny very specific rights. For example, you might want to deny access to a specific set of commands for a specific group of administrators who otherwise have broad access rights or to strictly limit exactly what commands users can execute. Depending on the requirements of your organization, you might configure these types of role definitions to be used in a restricted or unrestricted shell.
The steps for creating a role definition with specific privileges are similar to the steps for creating the other roles. In this example, rights are defined to prevent the execution of specific commands and combined with a right to grant access to all commands not explicitly listed.