macos 重新安装 Homebrew 的最佳/最安全方法是什么？

What is the best/safest way to reinstall Homebrew?

提问by AndrewKS

I am getting issues with permissions in Homebrew: After I installed Node and tried to install npm using the curl command Homebrew tells you to use, it would fail due to EACCESS errors. I checked the node folder and the permissions were a) unowned by a user (I had to chown it) and b) Had no write permissions (I had to chmod 755 it).

我在 Homebrew 中遇到权限问题：在我安装 Node 并尝试使用 Homebrew 告诉您使用的 curl 命令安装 npm 后，它会由于 EACCESS 错误而失败。我检查了节点文件夹，权限是 a) 用户不拥有（我必须 chown 它）和 b）没有写权限（我必须 chmod 755 它）。

I've fixed the issue with NPM, but I had to run its install script as sudo (which is bad!).

我已经用 NPM 解决了这个问题，但我不得不以 sudo 的身份运行它的安装脚本（这很糟糕！）。

I assume I must have installed Homebrew as root or something similar. I am hoping that reinstallation will fix it, but I can't find a source on how to reinstall Homebrew.

我假设我必须以 root 或类似的身份安装 Homebrew。我希望重新安装可以解决它，但我找不到有关如何重新安装 Homebrew 的来源。

When I rerun the installer in Terminal I get:

当我在终端中重新运行安装程序时，我得到：

/usr/local/.git already exists!

采纳答案by kayge

Try running the command brew doctorand let us know what sort of output you get

尝试运行命令 brew doctor并让我们知道您得到什么样的输出

edit: And to answer the title question, this is from their FAQ:

编辑：并回答标题问题，这是来自他们的常见问题解答：

Homebrew doesn't write files outside its prefix. So generally you can just rm -rfthe folder you installed it in.

Homebrew 不会在其前缀之外写入文件。所以通常你可以只rm -rf安装它的文件夹。

So following that up with a clean re-install (following their latest recommended steps) should be your best bet.

因此，进行干净的重新安装（遵循他们最新推荐的步骤）应该是您最好的选择。

回答by Ming C

Brewalready provide a command to uninstall itself:

Brew已经提供了卸载自身的命令：

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"

If you failed to run this command due to permission (like run as second user), run again with sudo

如果由于权限（例如以第二个用户身份运行）而无法运行此命令，请使用sudo再次运行

Then you can install again:

然后你可以再次安装：

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

回答by William Entriken

Process is to clean up and then reinstall with the following commands:

过程是使用以下命令清理然后重新安装：

rm -rf /usr/local/Cellar /usr/local/.git && brew cleanup
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install )"

Notes:

笔记：

• Always check curl | bash (or ruby)commands before running them
• http://brew.sh/(for installation notes)
• https://raw.githubusercontent.com/Homebrew/install/master/install(for clean up notes, see "Homebrew is already installed")

• curl | bash (or ruby)在运行之前始终检查命令
• http://brew.sh/（安装说明）
• https://raw.githubusercontent.com/Homebrew/install/master/install（有关清理说明，请参阅“Homebrew 已安装”）

回答by Nelson

The way to reinstall Homebrew is completely remove it and start over. The Homebrew FAQhas a link to a shell scriptto uninstall homebrew.

重新安装 Homebrew 的方法是完全删除它并重新开始。该家酿常见问题有一个链接到一个shell脚本来卸载自制。

If the only thing you've installed in /usr/localis homebrew itself, you can just rm -rf /usr/local/* /usr/local/.gitto clear it out. But /usr/local/is the standard Unix directory for all extra binaries, not just Homebrew, so you may have other things installed there. In that case uninstall_homebrew.shis a better bet. It is careful to only remove homebrew's files and leave the rest alone.

如果您安装的唯一东西/usr/local是自制软件本身，您可以rm -rf /usr/local/* /usr/local/.git将其清除。但它/usr/local/是所有额外二进制文件的标准 Unix 目录，不仅仅是 Homebrew，所以你可能在那里安装了其他东西。在这种情况下uninstall_homebrew.sh是更好的选择。小心地只删除自制软件的文件，而不要管其余的。

回答by Ansari

For Mac OS X Mojave and above

对于 Mac OS X Mojave 及更高版本

To Uninstall Homebrew, run following command:

要卸载 Homebrew，请运行以下命令：

sudo ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"

To Install Homebrew, run following command:

要安装 Homebrew，请运行以下命令：

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

And if you run into Permission denied issue, try running this command followed by install command again:

如果您遇到 Permission denied 问题，请尝试再次运行此命令，然后再运行 install 命令：

sudo chown -R $(whoami):admin /usr/local/* && sudo chmod -R g+rwx /usr/local/*

回答by DILIP KOSURI

For me, this one worked without the sudo access.

对我来说，这个工作没有 sudo 访问权限。

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

For more reference, please follow https://gist.github.com/mxcl/323731

更多参考请关注 https://gist.github.com/mxcl/323731