Solve the Problem of prompting the user that the CentOS Sudo file is not in the sudoers file

Solve the Problem of prompting the user that the CentOS Sudo file is not in the sudoers file

In CentOS, a common user uses the sudo command and usually prompts that the user is not in sudoers. Therefore, this user does not have the sudo command permission. The following describes how to add the sudo command permission.

When sudo is used, the system prompts "xxx is not in the sudoers file. this incident will be reported. XXX is your user name, that is, your user name does not have permission to use sudo. You just need to modify the/etc/sudoers file. The following is the modification method:

1. Enter the superuser mode. That is, enter "su-". The system will ask you to enter the superuser password and enter the password to enter the superuser mode. (Of course, you can also use root)
2. Add the write permission for the file. That is, enter the command "chmod u + w/etc/sudoers ".
3. Edit the/etc/sudoers file. That is, enter the command "vi/etc/sudoers", enter "I" to enter the editing mode, and find this line: "root ALL = (ALL) "ALL" add "xxx ALL = (ALL) ALL" (here xxx is your user name), and save it (that is, press the Esc key first, and then enter ": wq.
4. revoke the write permission of a file. That is, enter the command "chmod u-w/etc/sudoers ".