无法创建符号链接share/git-core/contrib，/usr/local/share/git-core不可写。

Question

我真的尝试了修复、卸载所有东西再重新安装等各种建议，但没有一个解决方案有效。我完全被卡住了，需要帮助找到解决方案！谢谢您提前的帮助，Christoph

MacBook-2:~ MyUserName$ brew install git
Warning: git-2.1.3 already installed, it's just not linked
MacBook-2:~ MyUserName$ brew destroy git
Error: Unknown command: destroy
MacBook-2:~ MyUserName$ brew uninstall git
Uninstalling /usr/local/Cellar/git/2.1.3...
MacBook-2:~ MyUserName$ brew install git
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/git-    2.1.3.yosemite.bottle.tar.gz
Already downloaded: /Library/Caches/Homebrew/git-2.1.3.yosemite.bottle.tar.gz
==> Pouring git-2.1.3.yosemite.bottle.tar.gz
==> Caveats
The OS X keychain credential helper has been installed to:
 /usr/local/bin/git-credential-osxkeychain

The 'contrib' directory has been installed to:
 /usr/local/share/git-core/contrib

Bash completion has been installed to:
 /usr/local/etc/bash_completion.d

zsh completion has been installed to:
 /usr/local/share/zsh/site-functions
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
Could not symlink share/git-core/contrib
 /usr/local/share/git-core is not writable.

You can try again using:
 brew link git
==> Summary
  /usr/local/Cellar/git/2.1.3: 1342 files, 32M
MacBook-2:~ MyUserName$ brew link git
Linking /usr/local/Cellar/git/2.1.3... 
Error: Could not symlink share/git-core/contrib
 /usr/local/share/git-core is not writable.

- AWChristoph

Answer 1

这可能与权限相关的错误。

请尝试

sudo chown -R $(whoami) /usr/local/share/

或者，如果你只需要在 git-core 路径上这样做，

sudo chown -R $(whoami) /usr/local/share/git-core 

可能已经足够了。

然后运行

brew link git

再次。

- mattias

---

@AWChristoph：这有帮助吗？ - mattias

我认为你有点误解了我们使用chown -R的目的。每当你遇到一个新的“权限被拒绝”的消息时，这是因为当前运行brew命令的用户没有权限写入这些目录。因此，针对你发布的最新消息，你需要执行chown -R $(whoami) /usr/local/lib/perl5/。但是也许更容易的方法是直接执行sudo brew link git。不过，一般情况下不建议这样做。 - mattias

哦，在它前面加上 sudo。在所有需要更改当前用户不拥有的目录权限的情况下，您都需要使用 sudo。因此，sudo chown -R $(whoami) /usr/local/lib/perl5/ 应该可以解决您的问题。 - mattias

我正在运行ZSH，对我来说是这样的：sudo chown -R $(whoami) /usr/local/share/zsh/site-functions。 - originalhat

@DevinBrown：不如用sudo chown -R $(whoami) /usr/local/share/或者sudo chown -R $(whoami) /usr/local/share/git-core的方式？我会更新答案，以便适用于ZSH。 - mattias

Answer 2

也许您之前使用了sudo来安装某些应用程序，因此/usr/local/share/和/usr/local/lib目录的所有者变为root。

执行：

sudo chown -R $(whoami) /usr/local/share/

sudo chown -R $(whoami) /usr/local/lib

然后运行：

brew link git

- Favoorr

---

他告诉我：没有这样的桶：/usr/local/Cellar/git - mercury

Answer 3

更改权限之前，我会：

选项1：尝试卸载brew

1）保存您的brew软件包列表：

brew list > my_packages.txt

2) 然后卸载brew：

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

3) 重新安装brew：

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

4) 重新安装所有的软件包：

brew install $(< my_packages.txt )

选项2：

如果那个方法不起作用，请尝试运行：

brew doctor

使用以下代码检查是否可以修剪错误：

brew prune

---

参考资料。

- RtmY