1.问题：卡在更新上

maming@maming-PC ~ % brew install tree
Updating Homebrew…

解决：暂时关闭更新

export HOMEBREW_NO_AUTO_UPDATE=true  

2.问题：安装时间比较久
解决：暂时替换为国内源

export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.ustc.edu.cn/homebrew-bottles

3.问题：安装时报错权限问题

maming@maming-PC ~ % brew install tree -d               
/usr/local/Homebrew/Library/Homebrew/brew.rb (Formulary::FormulaLoader): loading /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/tree.rb
Error: The following directories are not writable by your user:
/usr/local/share/man/man8

You should change the ownership of these directories to your user.
  sudo chown -R $(whoami) /usr/local/share/man/man8

And make sure that your user has write permission.
  chmod u+w /usr/local/share/man/man8
Error: Kernel.exit
/usr/local/Homebrew/Library/Homebrew/install.rb:76:in `exit'
/usr/local/Homebrew/Library/Homebrew/install.rb:76:in `diagnostic_checks'
/usr/local/Homebrew/Library/Homebrew/install.rb:52:in `perform_preinstall_checks'
/usr/local/Homebrew/Library/Homebrew/cmd/install.rb:257:in `install'
/usr/local/Homebrew/Library/Homebrew/brew.rb:110:in `<main>'
maming@maming-PC ~ % sudo brew install tree -d

解决: 按照上述提示设置权限

sudo chown -R $(whoami) /usr/local/share/man/man8
chmod u+w /usr/local/share/man/man8

4.问题： 安装好后，tree中文内容显示乱码
解决：

tree -N

参考:

https://www.cnblogs.com/coderxx/p/11337396.html
https://www.jianshu.com/p/7cb05a2b39a5