ubuntu下进入root错误解决方法

1.进入root用户提示su: Authentication failure

roots@ubuntu:~$ su -

Password:

su: Authentication failure

2.通过sudo更改root密码就可以了

roots@ubuntu:~$ sudo passwd root

[sudo] password for roots:

Enter new UNIX password:

Retype new UNIX password:

passwd: password updated successfully

roots@ubuntu:~$ su -

Password:

root@ubuntu:~#