Ubuntu 12.04環境下建制Ruby on Rails - RVM注意事項

RVM自動生成： 

～／.bash_profile

  [[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*

～／.bashrc

  PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting

》由於ubuntu 12.04預設不會執行.bash_profile，會造成找不到執行檔路徑的錯誤
請手動加入此行於～/.bashrc
source ~/.bash_profile