当我运行rake -T（或任何rake命令）时，我遇到了这个错误：
$ rake -T
rake aborted!
no such file to load -- bundler/setup
<internal:lib/rubygems/custom_require>:29:in `require'
<internal:lib/rubygems/custom_require>:29:in `require'
/home/myself/rails/RailApp1/config/boot.rb:6:in `<top (required)>'
<internal:lib/rubygems/custom_require>:29:in `require'
<internal:lib/rubygems/custom_require>:29:in `require'
/home/myself/rails/RailApp1/config/application.rb:1:in `<top (required)>'
<internal:lib/rubygems/custom_require>:29:in `require'
<internal:lib/rubygems/custom_require>:29:in `require'
/home/myself/rails/RailApp1/Rakefile:5:in `<top (required)>'
/usr/lib/ruby/1.9.1/rake.rb:2373:in `load'
/usr/lib/ruby/1.9.1/rake.rb:2373:in `raw_load_rakefile'
/usr/lib/ruby/1.9.1/rake.rb:2007:in `block in load_rakefile'
/usr/lib/ruby/1.9.1/rake.rb:2058:in `standard_exception_handling'
/usr/lib/ruby/1.9.1/rake.rb:2006:in `load_rakefile'
/usr/lib/ruby/1.9.1/rake.rb:1991:in `run'
/usr/bin/rake:28:in `<main>'
我已经检查了rake和bundler的位置：
$ which rake
/usr/bin/rake
$ which bundle
/usr/bin/bundle
我也找到了这些目录。
/usr/lib/ruby/gems/1.8/gems/bundler-1.0.14/lib/bundler/
/usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/
/usr/lib/ruby/gems/1.8/gems/rake-0.9.2/lib/rake/
当我运行bundle exec rake *时：
$bundle exec rake -T
Could not find rake-0.9.2 in any of the sources
Run 'bundle install' to install missing gems
当我在我的应用程序中运行bundle install时：
$bundle install
Using rake (0.9.2)
Using multi_json (1.0.3)
Using activesupport (3.1.1)
Using builder (3.0.0)
Using i18n (0.6.0)
Using activemodel (3.1.1)
Using erubis (2.7.0)
Using rack (1.3.4)
Using rack-cache (1.1)
Using rack-mount (0.8.3)
Using rack-test (0.6.1)
Using hike (1.2.1)
Using tilt (1.3.3)
Using sprockets (2.0.2)
Using actionpack (3.1.1)
Using mime-types (1.16)
Using polyglot (0.3.2)
Using treetop (1.4.10)
Using mail (2.3.0)
Using actionmailer (3.1.1)
Using arel (2.2.1)
Using tzinfo (0.3.30)
Using activerecord (3.1.1)
Using activeresource (3.1.1)
Using bundler (1.0.21)
Using coffee-script-source (1.1.2)
Using execjs (1.2.9)
Using coffee-script (2.2.0)
Using rack-ssl (1.3.2)
Using json (1.6.1)
Using rdoc (3.10)
Using thor (0.14.6)
Using railties (3.1.1)
Using coffee-rails (3.1.1)
Using jquery-rails (1.0.14)
Using rails (3.1.1)
Using sass (3.1.10)
Using sass-rails (3.1.4)
Using sqlite3 (1.3.4)
Using uglifier (1.0.3)
但错误仍然存在，对此非常困惑..