ruby-on-rails – Capistrano RVM和Ubuntu RVM不是一个功能,用’

我一直在遇到这个错误：

2013-03-24 15:13:36 executing `deploy:run_migrations'
  * executing "rvm gemset use vapin"
    servers: ["111.111.111.11"]
    [111.111.111.11] executing command
 ** [out :: 111.111.111.11] 
 ** [out :: 111.111.111.11] 
 ** [out :: 111.111.111.11] RVM is not a function,selecting rubies with 'rvm use ...' will not work.
 ** [out :: 111.111.111.11] 
 ** [out :: 111.111.111.11] 
 ** [out :: 111.111.111.11] 
 ** [out :: 111.111.111.11] You need to change your terminal emulator preferences to allow login shell.
 ** [out :: 111.111.111.11] 
 ** [out :: 111.111.111.11] Sometimes it is required to use `/bin/bash --login` as the command.
 ** [out :: 111.111.111.11] 
 ** [out :: 111.111.111.11] Please visit https://rvm.io/integration/gnome-terminal/ for a example.

这是我的一些deploy.rb文件：

require 'bundler/capistrano'
    require 'rvm/capistrano'
    # set the ruby version
    #set :rvm_ruby_string,'ruby-1.9.3-p392'
    #set :rvm_type,:system

    # set the rvm gemset to use
    set :rvm_gemset,'vapin'
...
    task :install do
        run "rvm gemset use #{rvm_gemset}"
        run "cd #{current_path} && bundle install  --without=test"
    end

RVM安装在我的服务器上.

$which rvm
/usr/local/rvm/bin/rvm
$which ruby
/usr/local/rvm/rubies/ruby-1.9.3-p392/bin/ruby

任何帮助表示赞赏.我一直在谷歌上搜索这个.

编辑

我已经卸载了RVM的多用户安装并重新安装了单用户版本.

我将此行添加到deploy.rb脚本中：
set：default_shell,“/ bin / bash –login”#rvm脚本正常工作所需的#

现在我没有得到“RVM不是一个函数….”错误.

问题是当捆绑安装运行时,我的rvm gemset中没有安装gem.