xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun

mac下出现xcrun: error导致git无法使用的解决办法

Have you upgraded to OS X El Cap­i­tan from App Store ?

您是否已从App Store升级到MAC电脑OS系统 

Have you sud­denly started get­ting the fol­low­ing error in your project?

您是否突然在项目中遇到以下错误

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

If yes, then here is the solution

如果是，那么这是解决方案

xcode-select --install

Remem­ber, in MAC git is attached to XCode’s Com­mand line tools.
请记住，在MAC git中附加了XCode的命令行工具。

摘自：https://tips.tutorialhorizon.com//2015/10/01/xcrun-error-invalid-active-developer-path-library-developer-commandline-tools-missing-xcrun/