blocks|key|3208394|text|您是如何安装Homebrew的？他们的official+installation+instructions包括运行ruby脚本。这应该会为你解决权限问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3208395|如果您不想运行脚本，页面中有一节名为“为开发人员安装到/usr/local”，它解释了/usr/local目录所需权限的更改。|3208396|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/mxcl/homebrew/wiki/installation^0|J|Y|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

How did you install Homebrew? Their <a href="https://github.com/mxcl/homebrew/wiki/installation" rel="nofollow">official installation instructions</a> include running a ruby script. That should take care of the permission issues for you. 

If you don't want to run a script, there is a section of that page called "Installing to /usr/local for Developers" that explains the change in permissions needed for the /usr/local directory.

blocks|key|284275|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|284276|+sudo+chown+-R+$USER+/usr/local|blockquote|offset|length|style|CODE|284277|284278|284279|您必须使用这一行给自己提供/usr/local/的所有权。在使用官方文档顶部的ruby一行程序安装Homebrew之后，我不得不自己做这件事。对我来说很有吸引力。这应该是你唯一需要使用Homebrew进行sudo的时间。|284280|我不确定ruby一行程序是否能做到这一点。如果是这样，那么我的系统上就有其他东西控制了/usr/local。|284281|编辑：我完全没有注意到这一点，但是@samvermette没有(参见对我的回答的回复)：如果你运行上面的命令并通过自制软件安装了一些需要特殊用户权限的东西，比如mysql，请确保交还这些权限(因为上面的命令将/usr/local内的所有东西的递归所有权给了你($USER)。在mysql中，它是…|BOLD|284282|284283|+sudo+chown+-RL+mysql:mysql+/usr/local/mysql/data|284284|284285|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/users/87158/samvermette^0|0|1|U|0|0|0|D|B|2U|4|0|17|A|0|0|2|28|5|2W|A|3M|5|H|C|0|0|0|1|1C|0|0^^$0|@$1|2|3|-4|4|5|6|12|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|13|7|@$D|14|E|15|F|G]]|8|@]|9|$]]|$1|H|3|-4|4|5|6|16|7|@]|8|@]|9|$]]|$1|I|3|-4|4|5|6|17|7|@]|8|@]|9|$]]|$1|J|3|K|4|5|6|18|7|@$D|19|E|1A|F|G]|$D|1B|E|1C|F|G]]|8|@]|9|$]]|$1|L|3|M|4|5|6|1D|7|@$D|1E|E|1F|F|G]]|8|@]|9|$]]|$1|N|3|O|4|5|6|1G|7|@$D|1H|E|1I|F|P]|$D|1J|E|1K|F|G]|$D|1L|E|1M|F|G]|$D|1N|E|1O|F|G]]|8|@$D|1P|E|1Q|1|1R]]|9|$]]|$1|Q|3|-4|4|5|6|1S|7|@]|8|@]|9|$]]|$1|R|3|S|4|C|6|1T|7|@$D|1U|E|1V|F|G]]|8|@]|9|$]]|$1|T|3|-4|4|5|6|1W|7|@]|8|@]|9|$]]|$1|U|3|-4|4|5|6|1X|7|@]|8|@]|9|$]]]|V|$W|$4|X|Y|Z|9|$10|11]]]]

<blockquote>
 <code>sudo chown -R $USER /usr/local</code>
</blockquote>

You'll have to give yourself ownership of <code>/usr/local/</code> using that line right there. I had to do this myself after using the ruby one-liner at the top of the official docs to install Homebrew. Worked like a charm for me. It ought to be the only time you'll ever need to <code>sudo</code> with Homebrew.

I'm not sure if the ruby one-liner does this. If it did, then something else on my system took control of <code>/usr/local</code> since.

Edit: I completely missed this, but <a href="https://stackoverflow.com/users/87158/samvermette">@samvermette</a> didn't (see replies to my answer): if you run this command above and have something installed via homebrew that requires special user permissions, like <code>mysql</code>, make sure to give those permissions back (as the above command gives recursive ownership to everything inside <code>/usr/local</code> to you (<code>$USER</code>). In the case of mysql, it's…

<blockquote>
 <code>sudo chown -RL mysql:mysql /usr/local/mysql/data</code>
</blockquote>

blocks|key|286489|text|我在升级到Mavericks后遇到了这个问题，当我在谷歌上搜索错误消息时，这个页面是最热门的搜索结果。我继续寻找，找到了this+answer+on+stack+overflow.com。简而言之，就是：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|286490|sudo+chmod+a%2Bw+/usr/local/Cellar|code-block|syntax|javascript|286491|这为我解决了这个问题，而且由于它只更改了错误消息中引用的特定路径的权限，因此似乎不太可能对其他安装产生负面影响。|286492|我把这个答案放在这里，给其他像我一样最先找到这个页面的人。然而，功劳应该归功于jdi。|286493|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/9800527/homebrew-install-permissions-issue|1|https://stackoverflow.com/users/496445/jdi^0|1O|X|0|0|0|0|13|3|1|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|C|$]]|$1|K|3|L|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|M|3|-4|5|6|7|16|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]|U|$5|P|Q|R|C|$S|V]]]]

I had this issue after upgrading to Mavericks, and this page was the top search result when googling the error message. I continued searching and found <a href="https://stackoverflow.com/questions/9800527/homebrew-install-permissions-issue" title="here">this answer on stack overflow.com</a>. Put concisely, it is:

<pre><code>sudo chmod a+w /usr/local/Cellar
</code></pre>

This fixed the issue for me, and as it only changes permissions for the specific path referenced in the error message, seemed unlikely to have negative side effects with other installations.

I'm putting this answer here for anyone else who may find this page first like I did. However, credit should go to <a href="https://stackoverflow.com/users/496445/jdi">jdi</a>.

blocks|key|282790|text|编辑：正如评论中提到的，在自制软件中使用sudo不是一个好主意，所以不要使用下面的答案！|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|282791|282792|如果使用sudo执行命令，也可以防止此错误：|282793|$+sudo+brew+install+wget|code-block|syntax|javascript|282794|但是要小心使用sudo，因为你可能会犯很多错误。|CODE|282795|entityMap^0|0|2|0|0|0|0|7|4|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|V|8|@]|D|@]|E|$]]|$1|G|3|H|5|6|7|W|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|X|8|@]|D|@]|E|$L|M]]|$1|N|3|O|5|6|7|Y|8|@$9|Z|A|10|B|P]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|R|$]]

EDIT: As mentioned in the comments it's a bad idea to use sudo with homebrew, so don't use the following answer!

<hr>

You can also prevent this error if you execute the command with sudo:

<pre><code>$ sudo brew install wget
</code></pre>

But take care of using <code>sudo</code> because you can make a lot of mistakes.

blocks|key|2995141|text|我建议确保当前用户是拥有/usr/local的组的成员。我相信在默认情况下，该组是wheel。要使自己成为该组的成员，请执行以下操作：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2995142|$+sudo+dscl+.+append+/Groups/wheel+GroupMembership+$USER|code-block|syntax|javascript|2995143|尽管它有点像一个笨拙的锤子，但它具有预期的效果--允许访问/usr/local中仅供提升成员使用(读/写)的项目。这种方法具有上述其他方法的优点，因为它利用了组成员身份，使系统上的多个(授权)用户能够使用自制软件。|2995144|entityMap^0|15|5|0|0|T|A|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

I suggest ensuring that the current user is a member of the group that owns /usr/local. I believe by default, that group is <code>wheel</code>. To make yourself a member of that group:

<pre><code>$ sudo dscl . append /Groups/wheel GroupMembership $USER
</code></pre>

Although something of an inelegant hammer, it has the intended effect - enabling access to items in <code>/usr/local</code> that are intended only for use (read/write) by elevated members. This approach has benefits of the other above because it takes advantage of the group memberships, enabling multiple (authorized) users on the system to use homebrew.

blocks|key|280665|text|您只能允许管理员用户写入/usr/local/|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|280666|chgrp+-R+admin+/usr/local
chmod+-R+g%2Bw+/usr/local
chgrp+-R+admin+/Library/Caches/Homebrew
chmod+-R+g%2Bw+/Library/Caches/Homebrew|code-block|syntax|javascript|280667|因为属于Admin组每个用户都可以安装新的依赖项。|280668|entityMap^0|C|B|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

You can allow only Admin users writing into <code>/usr/local/</code>?

<pre><code>chgrp -R admin /usr/local
chmod -R g+w /usr/local
chgrp -R admin /Library/Caches/Homebrew
chmod -R g+w /Library/Caches/Homebrew
</code></pre>

Since that each user who belongs to Admin group, will be able to install new dependencies.

blocks|key|284309|text|卸载并重新安装HomeBrew即可完成此操作|type|unstyled|depth|inlineStyleRanges|entityRanges|data|284310|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

uninstall and re install HomeBrew that will do the trick

blocks|key|2995195|text|在High+Sierra上，您需要以下命令，因为chown将不起作用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2995196|2995197|+sudo+chown+-R+$()+$(brew+--前缀)/*|blockquote|2995198|2995199|2995200|链接：|2995201|https://github.com/Homebrew/brew/issues/3228|offset|length|2995202|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|0|0|0|18|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|V|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|W|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Z|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|10|8|@]|9|@$L|11|M|12|1|13]]|A|$]]|$1|N|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|K]]]]

On High Sierra you need the following command cause chown will not work: 

<blockquote>
 sudo chown -R $(whoami) $(brew --prefix)/*
</blockquote>

Link:

<a href="https://github.com/Homebrew/brew/issues/3228" rel="noreferrer">https://github.com/Homebrew/brew/issues/3228</a>

Attempting to install rvm and ruby 1.9.2
I already installed homebrew and git, but couldn't get complete updates because I kept getting permission errors. Re-installed Snow Leopard and repaired permissions.
Now this happens...
<blockquote>
$ brew install wget
Error: Cannot write to /usr/local/Cellar
</blockquote>

Installing in Homebrew errors

正在尝试安装rvm和ruby 1.9.2我已经安装了homebrew和git，但无法获得完整的更新，因为我一直收到权限错误。已重新安装Snow Leopard并修复权限。现在这种情况发生了..。 $ brew安装wget错误:无法写入/usr/local/Cellar

问在Homebrew错误中安装
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