参考http://schalkneethling.github.io/blog/2015/10/16/errno-enoent-no-such-file-or-directory-jekyll-octopress-el-capitan

原因

Mac升级系统到El Capitan出现了这个问题

解决方法

执行下面命令

brew update

brew install rbenv ruby-build

brew upgrade ruby-build

rbenv install 2.2.3

rbenv local 2.2.3

gem install bundler

rbenv rehash

bundle install