mac 安装homobrew 报错解决

按照官网（https://brew.sh/index_zh-cn.html）给的命令：

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

执行后 报错：

　　xcode-select: error: invalid developer directory '/Library/Developer/CommandLineTools'
　　 Failed during: /usr/bin/sudo /usr/bin/xcode-select --switch /Library/Developer/CommandLineTools

从报错来看，是说 /Library/Developer/CommandLineTools 不是 xcode-select 的有效路径

那么要做的就有两件事：

1.找到 xcode-select的有效路径

　　2.使用有效路径替换 https://raw.githubusercontent.com/Homebrew/install/master/install 文件中的 /Library/Developer/CommandLineTools

1.查找 xcode-select的有效路径

使用命令：xcode-select 查看其用法

userNameMacBook-Pro:test userName$ xcode-select

xcode-select: error: no command option given

Usage: xcode-select [options]

Print or change the path to the active developer directory. This directory

controls which tools are used for the Xcode command line tools (for example,

xcodebuild) as well as the BSD development commands (such as cc and make).

Options:

-h, --help                  print this help message and exit

-p, --print-path            print the path of the active developer directory

-s <path>, --switch <path>  set the path for the active developer directory

--install                   open a dialog for installation of the command line developer tools

-v, --version               print the xcode-select version

-r, --reset                 reset to the default command line tools path

执行：xcode-select -p找到真正的路径，输出

　　/Applications/Xcode.app/Contents/Developer 即 xcode-select的有效路径

2.使用有效路径：/Applications/Xcode.app/Contents/Developer

替换 https://raw.githubusercontent.com/Homebrew/install/master/install 文件中的 /Library/Developer/CommandLineTools

将https://raw.githubusercontent.com/Homebrew/install/master/install 内容复制下来，将第306和315行两处的/Library/Developer/CommandLineTools

改为/Applications/Xcode.app/Contents/Developer 并保存名为 install的文件

3.进入保存的install文件目录下，执行

ruby -e "$(cat install)"即可