The UNIX passwd command is an example; it's a command-line tool with special privileges to change the password (setuid root), but the only thing it can do is change passwords.

UNIX的passwd命令就是一个例子；它是一个具有特定特权的命令行工具，用于修改密码(setuid root)，但是它所能做的只是修改密码。

youdao

One obvious solution would be to set the user password, configure /etc/sudoers, then run passwd -l root to disable root logins entirely.

那就请修改一下吧。 一种常见的解决方案是设置用户的密码，配置 /etc/sudoers，然后运行 passwd -l root 彻底禁止 root 登录。

youdao

Without a username, the passwd command will change the root password.

如果没有用户名，passwd命令将会改变root的密码。

youdao