錯誤，同時運行有關命令

耙我安裝紅寶石的一切都在軌道上我的Linux system..and然後當我鍵入命令「約耙」下面是error..plz幫助錯誤，同時運行有關命令

rake aborted! 
    Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a     list of available runtimes. 
    /home/imobigeeks1/work/demo/jbuilder/ruby/1.8/gems/execjs-1.4.0/lib/execjs/runtimes.rb:51:in `autodetect' 
    /home/imobigeeks1/work/demo/jbuilder/ruby/1.8/gems/execjs-1.4.0/lib/execjs.rb:5 
    /home/imobigeeks1/work/demo/jbuilder/ruby/1.8/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `require' 
    /home/imobigeeks1/work/demo/jbuilder/ruby/1.8/gems/coffee-script-2.2.0/lib/coffee_script.rb:1 
    /home/imobigeeks1/work/demo/jbuilder/ruby/1.8/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `require' 
    /home/imobigeeks1/work/demo/jbuilder/ruby/1.8/gems/coffee-script-2.2.0/lib/coffee- script.rb:1 
    /home/imobigeeks1/work/demo/jbuilder/ruby/1.8/gems/coffee-rails-3.2.2/lib/coffee- rails.rb:1:in `require' 
    /home/imobigeeks1/work/demo/jbuilder/ruby/1.8/gems/coffee-rails-3.2.2/lib/coffee- rails.rb:1 
    /home/imobigeeks1/work/demo/config/application.rb:7 
    /home/imobigeeks1/work/demo/Rakefile:5 
    (See full trace by running task with --trace)

而且我也安裝了javascript使用gem install execjs命令仍然顯示相同的問題

來源

2013-03-13 user2164254

請格式化您的文章，並在此提供相關的代碼，不涉及庫 – Blizzer 2013-03-13 11:41:42

你安裝包\ – 2013-03-13 11:43:57

耙中止！找不到JavaScript運行時。 – user2164254 2013-03-13 11:45:52