Linux can not always use the root user operation, so there is a security risk. But when users log in using ordinary operation Some commands require root privileges, this time we should mention the right to carry out the operation.
sudo followed by the command to be operated, the transport will be.
When prompted some errors, such as when the command does not exist or need root privileges,
To operate the command as the root user interface, visudo
Below file ALL% wheel ALL = (ALL), inserting normal user account