Linux: 'Username' is not in the sudoers file. This incident will be reported

Question

After logging into ssh, I got this message:

\'Username\' is not in the sudoers file. This incident will be reported.

How can I r

Answer 1

Both the above answers are correct as far as they go but it is easier to add your user to the sudo group in debian based systems (Ubuntu, kbuntu, debian, etc) and the wheel group under RedHat based systems (RedHat, Fedora, CentOS, etc)

usermod -a -G sudo user
or
usermod -a -G wheel user