In Fedora Linux, "xxx is not in the sudoers file", fedorasudoers

In Fedora Linux, "xxx is not in the sudoers file", fedorasudoers

Problem description:

To execute some operations in Fedora, you need to use the root permission. When using the command:

Sudo

If you want to temporarily obtain the root permission in a common user, you are prompted:
"Xxx is not in the sudoers file. The incident will be reported ."
Note: "xxx" is the user name of a common user.

Solution:

Input:

Su

Enter the root password and switch to the root user.
Input:

Mongodo

Note: There is no space between "vi" and "sudo.

Move the cursor to find:

"Root ALL = (ALL) ALL"

Place the cursor in this line, and press the "o" key to insert a blank line under this line. Enter:

"Xxx ALL = (ALL) ALL"

Note: "xxx" is the user name of a common user.
Save and exit.
Enter:

Sudo chmod 440/etc/sudoers

Change "sudoers" permission to 440.
This problem is now resolved.