问题描述
我在macOS Mojave 10.14.2中运行了brew outdated，并确定python和python@2已过时.当我运行brew upgrade时，两者都失败了.例如python@2:
I ran brew outdated in macOS Mojave 10.14.2 and determined that python and python@2 were outdated. When I ran brew upgrade it failed for both. For example for python@2:
==> Upgrading python@2
==> Downloading https://homebrew.bintray.com/bottles/[email protected]_2.mojave.bottle.tar.gz
######################################################################## 100.0%
==> Pouring [email protected]_2.mojave.bottle.tar.gz
Error: An unexpected error occurred during the `brew link` step
The formula built, but is not symlinked into /usr/local
Permission denied @ dir_s_mkdir - /usr/local/Frameworks
Error: Permission denied @ dir_s_mkdir - /usr/local/Frameworks
我运行了brew doctor，它建议使用brew link，但这仍然失败，并出现相同的权限错误:
I ran brew doctor and it recommends to brew link but this still fails with the same permission error:
Linking /usr/local/Cellar/python@2/2.7.15_2... Error: Permission denied @ dir_s_mkdir - /usr/local/Frameworks
建议向父目录授予特权，但是我想了解为什么会发生这种情况并找到学习的解决方案.
This post recommends to grant privileges to the parent directory, but I want to understand why this happens and find a solution for learning.
推荐答案
我找到了答案在这里.根据该帖子，我必须先sudo mkdir /usr/local/Frameworks创建丢失的目录，然后再创建sudo chown -R $(whoami) $(brew --prefix)/*，因为sudo chown -R $(whoami) /usr/local在Mojave和High Sierra中不再可用.之后我可以brew link python和brew link python@2.
I found the answer here. I had to sudo mkdir /usr/local/Frameworks to create the missing directory first, then sudo chown -R $(whoami) $(brew --prefix)/* since sudo chown -R $(whoami) /usr/local no longer works in Mojave - and High Sierra before that, according to the post. I was able to brew link python and brew link python@2 after that.
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