如果您不需要或不想加密计算机上的文件，但希望停止随意窥探，那么在Linux/Unix上用密码保护文件夹的最佳方法是什么？今天的超级用户问答帖子对一位好奇的读者的问题提供了有用的答案。

今天的问题；回答环节是由SuperUser提供的，SuperUser是Stack Exchange的一个分支，是一个由社区驱动的Q&amp；分组；一个网站。

照片由Nathan Meijer（Flickr）提供。

问题

超级用户读者Zane Woodard想知道如何在Linux/Unix上不加密地对文件夹进行密码保护：

I have searched around quite a bit for either a built-in feature or program to do this, but had no luck. I want to password protect a folder, but do not want to encrypt it.

The security of the contents of the folder is not important, the password would just act as a deterrent to somebody attempting to access the contents of the folder from my computer. Think of it like a password lock on a computer, if you were to remove the hard-drive, you could easily take all the files the user had, but the password is still a deterrent to people accessing the contents of the drive.

Two main reas*** for not using encryption here are:

• Decreased performance for opening files.
• Encryption prevents the contents from being indexed/searchable.

Is anybody aware of a solution?

有没有一个简单的解决方案，赞恩可以用来密码保护他的文件夹？

答案

超级用户贡献者R舒尔茨和Bodo Thiesen为我们提供了答案。首先，R舒尔茨：

The easiest way would be to change the permissi*** of the files so that they are not readable by anyone other than the owner. Once that is done, a user would have to either log in as you (which should require a password) or sudo as root (which should also require a password). To change the permissi***, simply use the following command on any files you do not want others to have access to.

• chmod og-rwx filename

This assumes that when you are not at your computer, your screen is locked and there is a password for your account as well as the root account.

接着是博多·蒂森的回答：

Create a new user for these protected files and/or directories. Then replace $newuser with the new user account name:

• chown $newuser filename directoryname
• chmod og-rwx filename directoryname

This way, the files and directories are safe even if you do not log out and have your screen unlocked for some reason.

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