mac brew 安装
注意!
在Mac 安装brew - 简书时,homebrew-core的安装目录在cd /usr/local/Homebrew/Library/Taps/homebrew
下,而不是cd /usr/local/Homebrew/Library/Taps
在Mac 安装brew - 简书时,homebrew-core的安装目录在cd /usr/local/Homebrew/Library/Taps/homebrew
下,而不是cd /usr/local/Homebrew/Library/Taps