当前pod版本：1.0.1 

提示Abort trap: 6

1.搜到一个解决办法：http://stackoverflow.com/questions/39980096/xcode8-cocoapods-abort-trap6

sudo gem uninstall cocoapods

sudo gem install cocoapods --pre

Hopefully this will solve your problem.

Update

CocoaPods has released version 1.2.0, so you can now install using

sudo gem install cocoapods

2.在执行sudo gem install cocoapods --pre时提示

ERROR:  While executing gem ... (Errno::EPERM)

Operation not permitted - /usr/bin/xcodeproj

3.找到一个2的解决办法：http://stackoverflow.com/questions/30812777/cannot-install-cocoa-pods-after-uninstalling-results-in-error/30851030#30851030

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