Authentication token manipulation error ???????

miaho

>; >; [root at localhost named]# useradd -g users mandy
>; >; [root at localhost named]# passwd mandy
>; >; Changing password for user mandy.
>; >; New password:
>; >; BAD PASSWORD: it is too short
>; >; Retype new password:
>; >; Failed to find entry for user mandy.
>; >;
>; >; passwd: Authentication token manipulation error

我想去改密码,可是改不了..但是可以正常登陆,这是为什么

oceanb0y

你系统文件里面的内容是正常的吗?
如 /etc/passwd /etc/shadow