-bash: /usr/local/bin/pod:bad interpreter: No such file or directory

执行pod命令时报错：

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

原因：系统升级后cocoapods不能使用了

解决方法：重新安装cocoapods