su: Authentication failure问题

做题需要挂载文件是遇到的一个问题：su命令不能切换root，提示su: Authentication failure，只要你sudo passwd root过一次之后，下次再su的时候只要输入密码就可以成功登录了(base) pwn@ubuntu:~/Desktop/test$ mount abc findmemount: only root can do that(base) pwn@ubunt

H3rmesk1t

222人浏览 · 2020-11-26 17:48:38

H3rmesk1t · 2020-11-26 17:48:38 发布

做题需要挂载文件是遇到的一个问题：
su命令不能切换root，提示su: Authentication failure，只要你sudo passwd root过一次之后，下次再su的时候只要输入密码就可以成功登录了

(base) pwn@ubuntu:~/Desktop/test$ mount abc findme 
mount: only root can do that
(base) pwn@ubuntu:~/Desktop/test$ conda activate pwn
(pwn) pwn@ubuntu:~/Desktop/test$ mount abc findme 
mount: only root can do that
(pwn) pwn@ubuntu:~/Desktop/test$ su root
Password: 
su: Authentication failure
(pwn) pwn@ubuntu:~/Desktop/test$ sudo passwd root
[sudo] password for pwn: 
Enter new UNIX password: 
Retype new UNIX password: 
passwd: password updated successfully
(pwn) pwn@ubuntu:~/Desktop/test$ su
Password: 
root@ubuntu:/home/pwn/Desktop/test#