快速安装
/bin/zsh -c "$(curl -fsSL https://gitee.com/cunkai/HomebrewCN/raw/master/Homebrew.sh)" speed
会提示选择镜像。我选择的是1 中科大
后面各种进度，但是提示报错了
Error:
homebrew-core is a shallow clone.
homebrew-cask is a shallow clone.
按照提示的方法试试：
git -C /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core fetch --unshallow真的文件很大，比较慢
git -C /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core fetch --unshallow
remote: Enumerating objects: 1173486, done.
remote: Counting objects: 100% (1173483/1173483), done.
remote: Compressing objects: 100% (348887/348887), done.
remote: Total 1167740 (delta 819307), reused 1164288 (delta 815967), pack-reused 0
Receiving objects: 100% (1167740/1167740), 506.74 MiB | 278.00 KiB/s, done.
Resolving deltas: 100% (819307/819307), completed with 5525 local objects.git -C /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask fetch --unshallow
?brew update
?当然还是装不上Telnet
brew install telnet
Warning: You are using macOS 10.14.
We (and Apple) do not provide support for this old version.
You will encounter build failures with some formulae.
Please create pull requests instead of asking for help on Homebrew's GitHub,
Twitter or any other official channels. You are responsible for resolving
any issues you experience while you are running this
old version.
telnet: A full installation of Xcode.app is required to compile
this software. Installing just the Command Line Tools is not sufficient.
Xcode can be installed from the App Store.
Error: telnet: An unsatisfied requirement failed this build.
bohu83MacBook-Pro:workspace benmu$ brew install telnet
缺了xcode.但是我的系统版本低。低配磁盘快满了，不装了。
