sudo: /etc/sudoers is mode 0442, should be 0440


This is the common issue faced by Linux users. The issue is as, while running command with help of sudo raises following exceptions

sudo: /etc/sudoers is mode 0442, should be 0440
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin
So presenting the solution for the same, run the following command on your terminal.

pkexec chmod 0440 /etc/sudoers

Hope it will help you :)