luo is not in the sudoers file. This incident will be reported.

This error message indicates that the user "luo" does not have the necessary permissions to run the command with "sudo". To resolve this issue, you will need to add "luo" to the sudoers file. This can be done by logging in as a user with sudo privileges and running the command "sudo visudo". This will open the sudoers file in the default text editor. You can then add the following line to the file:

luo ALL=(ALL) ALL

Save and close the file, and "luo" will now have sudo privileges.

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luo is not in the sudoers file. This incident will be reported.

This error message means that the user "luo" does not have the necessary permissions to execute a command with sudo. To resolve this issue, you need to add the user "luo" to the sudoers file.

To do this, you can follow these steps:

1. Log in as a user with sudo privileges.
2. Open the sudoers file using the command "sudo visudo".
3. Scroll down to the "User privilege specification" section.
4. Add the following line to the file:
luo ALL=(ALL:ALL) ALL
5. Save and exit the file.
6. Now the user "luo" should have sudo privileges.

Note: Be careful when editing the sudoers file, as any mistakes can cause serious problems with system administration.

xuyang is not in the sudoers file. This incident will be reported.

The statement "xuyang is not in the sudoers file" appears to be related to a Linux or Unix system context. In these operating systems, the `sudoers` file is a special configuration file that contains user accounts with elevated privileges, allowing them to execute commands as the superuser (root). When an attempt is made by a non-root user named "xuyang" to use the `sudo` command, and they are not listed in the `sudoers` file, the system responds with a message indicating that their access is denied due to insufficient permissions.

To provide more information or demonstrate, I'd need to clarify if we're discussing a technical issue or a hypothetical scenario. Here's what a typical error message might look like when encountered:

[xuyang@computer ~]$ sudo some_command
[sudo] password for xuyang: 
xuyang is not in the sudoers file.  This incident will be reported.

In a real-world scenario, to resolve this issue, xuyang would either need to add themselves to the `sudoers` file with the proper permission settings or run the command without `sudo` if they don't require administrative privileges.