A good example is the vipw command, which normally allows root to edit the system password file.

一个很好的例子是vipw命令，它通常允许root用户编辑系统口令文件。

youdao

From then on, no one — not even the administrators — could log into the system, because the password file had been corrupted.

从那时起，任何人——甚至是管理员——都不能登录到该系统，因为口令文件已经被破坏了。

youdao

You can select or omit specific software, determine the file system layout, choose user ID authentication methods, and even set the root user's password.

可以选择或省略特定的软件、决定文件系统布局、选择用户ID身份验证方法，甚至设置根用户的密码。

youdao

So a user simply has to chose a password and then the PGP system does all of the encryption and makes the file or the message secure.

NPR: The Math Behind Pellicano's Code