我是
Ruby on Rails的新手,我正在使用RVM来管理Ruby版本.
我的笔记本电脑安装了Ruby1.8.7,但我的项目是使用RVM,Ruby1.9.3和Rails 3.2.11.
我没有运行rails c或rails console而没有给我以下错误：
/home/phil/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/irb/completion.rb:9:in `require': cannot load such file -- readline (LoadError) from /home/phil/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/irb/completion.rb:9:in `<top (required)>' from /home/phil/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.11/lib/rails/commands/console.rb:3:in `require' from /home/phil/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.11/lib/rails/commands/console.rb:3:in `<top (required)>' from /home/phil/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.11/lib/rails/commands.rb:38:in `require' from /home/phil/.rvm/gems/ruby-1.9.3-p392/gems/railties-3.2.11/lib/rails/commands.rb:38:in `<top (required)>' from script/rails:6:in `require' from script/rails:6:in `<main>'
解决方法
编译Ruby时需要安装readline库.
如果您使用的是CentOS / Redhat / Fedora Linux,请使用以下命令安装软件包：
sudo yum install readline-devel
或者,在Ubuntu上,使用：
sudo apt-get install libreadline6 libreadline6-dev
然后重新编译Ruby.