3
2
I made a mistake of change the root shell to /bin/false, but when I want to change it back, I always got error
sudo chsh -s /bin/bash root
[sudo] password: <input current user password>
password: <input root password>
chsh: PAM: Authentication failure
...the easiest thing to do would be to boot off a livecd. Or try single user mode. – Bob – 2014-06-24T09:21:47.720