解决zsh: command not found: gitk，将git路径/usr/bin/git修改为/usr/local/bin/git

一、通过homebrew查看是否有异常（首先你得安装了Homebrew）

$ brew doctor

二、根据提示修改zsh配置

Warning: Homebrew's sbin was not found in your PATH but you have installed
formulae that put executables in /usr/local/sbin.
Consider setting the PATH for example like so:
  echo 'export PATH="/usr/local/sbin:$PATH"' >> ~/.zshrc

三、实际操作

$ vim ~/.zshrc

将 export PATH="/usr/local/sbin:$PATH 添加到配置文件中

$ source ~/.zshrc

$ which git 

$ git --version

四、如果还是不行只需要手动下载git-gui即可

$ brew install git-gui

也可参考链接：https://www.jianshu.com/p/7c6577dec016