Homebrew是mac上的软件包管理工具，类似一些发行版Linux上的yum、apt-get等。

安装Homebrew

1、 安装Xcode，到appstore搜索。
2、 打开终端，执行以下命令：

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

软件安装目录

软件都会安装到 /usr/local/Cellar

$ ls -la /usr/local/Cellar/
total 0
drwxrwxr-x   3 ephemerid  admin   96  1  6 15:31 .
drwxr-xr-x  16 root       wheel  512  1  6 15:25 ..
drwxr-xr-x   3 ephemerid  staff   96  1  6 15:31 tree

基本选项

安装完成后，执行brew，就有提示

$ brew
Example usage:
  brew search [TEXT|/REGEX/]
  brew info [FORMULA...]
  brew install FORMULA...
  brew update
  brew upgrade [FORMULA...]
  brew uninstall FORMULA...
  brew list [FORMULA...]

Troubleshooting:
  brew config
  brew doctor
  brew install --verbose --debug FORMULA

Contributing:
  brew create [URL [--no-fetch]]
  brew edit [FORMULA...]

Further help:
  brew commands
  brew help [COMMAND]
  man brew
  https://docs.brew.sh