You need to be root to perform this command.

This message typically means that the user account you are currently using does not have the necessary permissions to execute the command you are trying to run. In order to perform the command, you will need to either log in as the root user or use the "sudo" command to temporarily elevate your privileges.

For example, you can try running the command with "sudo" prefix like this:

sudo <command>

You will then be prompted to enter your user password before the command is executed with elevated privileges. However, be careful when using the "sudo" command as it can potentially cause harm to your system if used improperly.