的Rails 3.1控制台错误

Question

可能重复：
no such file to load — readline

我刚刚创建一个Rails应用程序，并试图进入控制台，但我不断收到一个错误

rellon@relloneee:~/Dropbox/Apress$ rails c 
/home/rellon/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/irb/completion.rb:9:in `require': no such file to load -- readline (LoadError) 
    from /home/rellon/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/irb/completion.rb:9:in `<top (required)>' 
    from /home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/commands/console.rb:3:in `require' 
    from /home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/commands/console.rb:3:in `<top (required)>' 
    from /home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/commands.rb:37:in `require' 
    from /home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.1.1/lib/rails/commands.rb:37:in `<top (required)>' 
    from script/rails:6:in `require' 
    from script/rails:6:in `<main>' 

请问我能否得到一些帮助.....

我也尝试撬，现在我得到这个消息

rellon@relloneee:~/Dropbox/Apress$ pry -r config/environment 
/home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:8: warning: already initialized constant DEFAULT_HOOKS 
/home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:21: warning: already initialized constant DEFAULT_PRINT 
/home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:39: warning: already initialized constant SIMPLE_PRINT 
/home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:48: warning: already initialized constant CLIPPED_PRINT 
/home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:53: warning: already initialized constant DEFAULT_EXCEPTION_HANDLER 
/home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:59: warning: already initialized constant DEFAULT_EXCEPTION_WHITELIST 
/home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:62: warning: already initialized constant DEFAULT_PROMPT 
/home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:85: warning: already initialized constant DEFAULT_CONTROL_D_HANDLER 
/home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:100: warning: already initialized constant SIMPLE_PROMPT 
/home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:102: warning: already initialized constant SHELL_PROMPT 
/home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:109: warning: already initialized constant NAV_PROMPT 
/home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:120: warning: already initialized constant DEFAULT_SYSTEM 
/home/rellon/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': no such file to load -- readline (LoadError) 
    from /home/rellon/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
    from /home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/lib/pry.rb:151:in `<top (required)>' 
    from /home/rellon/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
    from /home/rellon/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
    from /home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/bin/pry:12:in `rescue in <top (required)>' 
    from /home/rellon/.rvm/gems/ruby-1.9.2-p290/gems/pry-0.9.6.2/bin/pry:8:in `<top (required)>' 
    from /home/rellon/.rvm/gems/ruby-1.9.2-p290/bin/pry:19:in `load' 
    from /home/rellon/.rvm/gems/ruby-1.9.2-p290/bin/pry:19:in `<main>' 

Answer 1

貌似这个

no such file to load -- readline

基本上符合你的问题，你可能会错过的ReadLine模块。