有趣:为什么Freebsd下只有wheel组的用户才可以su?

"为什么Freebsd下只有wheel组的用户才可以su"?
这个疑问抱在我心里老久了,今天在网上翻手册的时候才发现一个有趣的答案:
这个问题应该是这样:
"为什么Linux下不是wheel组的用户也可以su,而Unix下只有wheel组的用户才可以
su"?
答案是:
From:
http://www.gnu.org/software/coreutils/manual/html\_node/coreutils\_149.html
by Richard Stallman:
Sometimes a few of the users try to hold total power over all the
rest. For example, in 1984, a few users at the MIT AI lab decided to
seize power by changing the operator password on the Twenex system and
keeping it secret from everyone else. (I was able to thwart this coup
and give power back to the users by patching the kernel, but I wouldn't
know how to do that in Unix.)
However, occasionally the rulers do tell someone. Under the usual su
mechanism, once someone learns the root password who sympathizes with
the ordinary users, he or she can tell the rest. The "wheel group"
feature would make this impossible, and thus cement the power of the
rulers.
I'm on the side of the masses, not that of the rulers. If you are used
to supporting the bosses and sysadmins in whatever they do, you might
find this idea strange at first.
大意是说,他不希望权限只被一小部分人所控制。他要站在群众的一方。

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