按照 wili 里的教程安装到第四部了,但是就进行不下去了,明明提示 bundle 和 rails 已经安装好了,但是就是提示没安装,是环境配置有问题吗?
a@ubuntu:~$ gem install bundle rails
    Successfully installed bundle-0.0.1
    Successfully installed rails-3.2.6
    2 gems installed
    Installing ri documentation for bundle-0.0.1...
    Installing ri documentation for rails-3.2.6...
    Installing RDoc documentation for bundle-0.0.1...
    Installing RDoc documentation for rails-3.2.6...
    a@ubuntu:~$ rails -v
    程序“rails”尚未安装。您可以使用以下命令安装:
    sudo apt-get install rails
    a@ubuntu:~$ bundle -v
    ERROR: Gem bundler is not installed, run gem install bundler first.
    a@ubuntu:~$