When I try to do sudo su
I get the following errors.
sudo: /etc/sudoers is mode 0777, should be 0440 sudo: no valid sudoers sources found, quitting
I tried following the post http://askubuntu.com/questions/50704/sudo-error-is-mode-0777-should-be-0440 , but it is not getting sorted out. My sudo su is not working even after those steps.
Also, I am having problem with ssh localhost command. When I type it, I am getting following errors.
~$ ssh localhost Connection closed by UNKNOWN
I tried somethings like sshd restart and all, but it is not working. Please can anyone help me?