sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set
- Log out as the current user, then log back in as root.
chown root:root /usr/bin/sudo && chmod 4755 /usr/bin/sudo
- Log out as root, then log back in as the current user.
sudo: error in /etc/sudo.conf, line 0 while loading plugin `sudoers_policy’
$ su root #enter password $ chmod 644 /usr/lib/sudo/sudoers.so $ chown -R root /usr/lib/sudo