xcode

1	`xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun`

root cause: Xcode command line tools丢失，基本上每次升级macOS都会被它问候

解决方法，重装 xcode command line：

1 2	`$ xcode-select --install xcode-select: note: install requested for command line developer tools`

回车之后会出现弹窗，点击"安装"即可