Mac升级10.13后cocoapods报错 -bash: /usr/local/bin/pod: /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby: bad interpreter: No such file or directory

最近把Mac升级到了最新系统10.13，但是用cocoapods执行命令pod install之后报错： -bash: /usr/local/bin/pod: /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby: bad interpreter: No such file or directory

具体原因不明，看了网友类似的错误报告，重新安装cocoapods就好了，有的说需要先卸载，我这边没有卸载，直接执行安装命令就好了

解决方式，在终端执行命令

sudo gem install -n /usr/local/bin cocoapods