Ruby迷

以前每次升级旧项目就直接‘bundle update’，但此前并不知道究竟会升级哪些gems，只有升级后用’gem diff Gemfile.lock’才知道。

Bundler 1.1新增了bundle outdated命令，用来显示Gemfile.lock中哪些gems有新版本，并显示新旧版本号。

这个是我执行后的结果，就类似这样：

�7�4  ~/railsapp/demo bundle outdated
Fetching gem metadata from https://rubygems.org/........

Outdated gems included in the bundle:
  * multi_json (1.2.0 > 1.1.0)
  * activesupport (3.2.3 > 3.2.2)
  * activemodel (3.2.3 > 3.2.2)
  * sprockets (2.4.0 > 2.1.2)
  * actionpack (3.2.3 > 3.2.2)
  * actionmailer (3.2.3 > 3.2.2)
  * activerecord (3.2.3 > 3.2.2)
  * activeresource (3.2.3 > 3.2.2)
  * json (1.6.6 > 1.6.5)
  * railties (3.2.3 > 3.2.2)
  * rails (3.2.3 > 3.2.2)
  * bootstrap-will_paginate (0.0.7 > 0.0.6)
  * chinese_pinyin (0.4.1 > 0.3.0)
  * orm_adapter (0.0.7 > 0.0.6)
  * guard-rspec (0.7.0 > 0.6.0)
  * guard-spork (0.6.0 > 0.5.2)
  * jquery-rails (2.0.2 > 2.0.1)
  * therubyracer (0.10.0 > 0.9.10)
  * less (2.1.0 > 2.0.11)
  * less-rails (2.2.0 > 2.1.8)
  * rspec-expectations (2.9.1 > 2.9.0)
  * twitter-bootstrap-rails (2.0.5 > 2.0.4)
  * uglifier (1.2.4 > 1.2.3)