MAC下安装homebrew.(-bash: brew: command not found)

安装homebrew的过程真是艰辛，屡战屡败，下了不下四五次了。
每次都是环境变量的锅

安装

请直接参考大佬文章，这里就不详述了https://zhuanlan.zhihu.com/p/90508170?utm_source=com.tencent.tim&utm_medium=social&utm_oi=1117506435474448384
（一次不行可以重装多次，总会成功）

安装好后，如果出现这个waring，代表环境变量有问题

Warning: /usr/local/bin is not in your PATH.
==> Installation successful!

==> Homebrew has enabled anonymous aggregate formulae and cask analytics.
Read the analytics documentation (and how to opt-out) here:
  https://docs.brew.sh/Analytics

==> Homebrew is run entirely by unpaid volunteers. Please consider donating:
  https://github.com/Homebrew/brew#donations
==> Next steps:
- Run `brew help` to get started
- Further documentation: 
    https://docs.brew.sh

测试发现是这个：

brew update

-bash: brew: command not found

检查：环境变量

sudo vi ~/.bash_profile

//添加
export PATH=/usr/local/bin:$PATH
//保存后终端执行
source ~/.bash_profile
export PATH=/usr/local/bin:$PATH
//再次尝试
brew -v
或者
brew update
//能执行brew命令就成了

安装homebrew的艰辛之路终于结束了QTQ