0 Harmony posted su: Authentication failure (base) :~$ su Password: su: Authentication failure than i try (base) :~$ sudo -i sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set how to solve this Authentication failure error? Edit Question
3 jassy answered Feb 17 '22 00:00 oh dear , i think you tried to change permission 777 to recursive manner. sudo -i the root account is blocked by default in Ubuntu, and there is no root password.set the password by above command Edit Answer