Rails S无法启动服务器：找不到rails（> = 0）？
我是Ruby / Rails的新手，但我还没有找到如何开始它（它几天前工作）。
我在actuall应用程序文件夹然后
rails s /Users/me/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:247:in `to_specs': Could not find rails (>= 0) amongst [minitest-1.6.0, rake-0.8.7, rdoc-2.5.8] (Gem::LoadError) from /Users/me/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:256:in `to_spec' from /Users/me/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems.rb:1210:in `gem' from /usr/bin/rails:18:in `' 所以当检查“gem列表”时，会有以下内容
rails (3.1.0, 3.1.0.rc8, 3.1.0.rc6) rails_config (0.2.4)
当我重新尝试“gem install rails”时，我得到了
Successfully installed rails-3.1.0 1 gem installed Installing ri documentation for rails-3.1.0... file 'lib' not found Installing RDoc documentation for rails-3.1.0... file 'lib' not found
捆绑展示栏：
WARNING: #<ArgumentError: Illformed requirement ["# 2.10.3"]> # -*- encoding: utf-8 -*- Gem::Specification.new do |s| s.name = %q{simplecov} s.version = "0.5.0" (ETC:)
gem环境：
RubyGems Environment: - RUBYGEMS VERSION: 1.8.10 - RUBY VERSION: 1.9.2 (2011-07-09 patchlevel 290) [x86_64-darwin11.1.0] - INSTALLATION DIRECTORY: /Users/me/.rvm/gems/ruby-1.9.2-p290 - RUBY EXECUTABLE: /Users/me/.rvm/rubies/ruby-1.9.2-p290/bin/ruby - EXECUTABLE DIRECTORY: /Users/me/.rvm/gems/ruby-1.9.2-p290/bin - RUBYGEMS PLATFORMS: - ruby - x86_64-darwin-11 - GEM PATHS: - /Users/me/.rvm/gems/ruby-1.9.2-p290 - /Users/me/.rvm/gems/ruby-1.9.2-p290@global - GEM CONFIGURATION: - :update_sources => true - :verbose => true - :benchmark => false - :backtrace => false - :bulk_threshold => 1000 - REMOTE SOURCES: - http://rubygems.org/
我现在已经试了8个小时，也许有人可以帮帮我吗？ 非常感谢！
编辑1 ：
运行bundle exec rails s：
WARNING: #<ArgumentError: Illformed requirement ["# 2.10.3"]> # -*- encoding: utf-8 -*- Gem::Specification.new do |s| s.name = %q{simplecov} s.version = "0.5.0" s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version= s.authors = ["Christoph Olszowka"] s.date = %q{2011-09-09} s.description = %q{Code coverage for Ruby 1.9 with a powerful configuration library and automatic merging of coverage across test suites} s.email = ["christoph at olszowka de"] s.files = [".gitignore", ".rvmrc", ".travis.yml", "Gemfile", "LICENSE", "README.rdoc", "Rakefile", "cucumber.yml", "features/config_adapters.feature", "features/config_autoload.feature", "features/config_command_name.feature", "features/config_coverage_dir.feature", "features/config_deactivate_merging.feature", "features/config_merge_timeout.feature", "features/config_project_name.feature", "features/config_styles.feature", "features/cucumber_basic.feature", "features/merging_test_unit_and_rspec.feature", "features/rspec_basic.feature", "features/rspec_groups_and_filters_basic.feature", "features/rspec_groups_and_filters_complex.feature", "features/rspec_without_simplecov.feature", "features/step_definitions/html_steps.rb", "features/step_definitions/simplecov_steps.rb", "features/step_definitions/transformers.rb", "features/step_definitions/web_steps.rb", "features/support/env.rb", "features/test_unit_basic.feature", "features/test_unit_groups_and_filters_basic.feature", "features/test_unit_groups_and_filters_complex.feature", "features/test_unit_without_simplecov.feature", "lib/simplecov.rb", "lib/simplecov/adapters.rb", "lib/simplecov/command_guesser.rb", "lib/simplecov/configuration.rb", "lib/simplecov/defaults.rb", "lib/simplecov/file_list.rb", "lib/simplecov/filter.rb", "lib/simplecov/formatter.rb", "lib/simplecov/formatter/simple_formatter.rb", "lib/simplecov/jruby_float_fix.rb", "lib/simplecov/merge_helpers.rb", "lib/simplecov/result.rb", "lib/simplecov/result_merger.rb", "lib/simplecov/source_file.rb", "lib/simplecov/version.rb", "simplecov.gemspec", "test/faked_project/Gemfile", "test/faked_project/Rakefile", "test/faked_project/cucumber.yml", "test/faked_project/features/step_definitions/my_steps.rb", "test/faked_project/features/support/env.rb", "test/faked_project/features/test_stuff.feature", "test/faked_project/lib/faked_project.rb", "test/faked_project/lib/faked_project/framework_specific.rb", "test/faked_project/lib/faked_project/meta_magic.rb", "test/faked_project/lib/faked_project/some_class.rb", "test/faked_project/spec/faked_spec.rb", "test/faked_project/spec/meta_magic_spec.rb", "test/faked_project/spec/some_class_spec.rb", "test/faked_project/spec/spec_helper.rb", "test/faked_project/test/faked_test.rb", "test/faked_project/test/meta_magic_test.rb", "test/faked_project/test/some_class_test.rb", "test/faked_project/test/test_helper.rb", "test/fixtures/app/controllers/sample_controller.rb", "test/fixtures/app/models/user.rb", "test/fixtures/deleted_source_sample.rb", "test/fixtures/frameworks/rspec_bad.rb", "test/fixtures/frameworks/rspec_good.rb", "test/fixtures/frameworks/testunit_bad.rb", "test/fixtures/frameworks/testunit_good.rb", "test/fixtures/resultset1.rb", "test/fixtures/resultset2.rb", "test/fixtures/sample.rb", "test/helper.rb", "test/shoulda_macros.rb", "test/test_1_8_fallbacks.rb", "test/test_command_guesser.rb", "test/test_deleted_source.rb", "test/test_file_list.rb", "test/test_filters.rb", "test/test_merge_helpers.rb", "test/test_result.rb", "test/test_return_codes.rb", "test/test_source_file.rb", "test/test_source_file_line.rb"] s.homepage = %q{http://github.com/colszowka/simplecov} s.require_paths = ["lib"] s.rubyforge_project = %q{simplecov} s.rubygems_version = %q{1.3.6} s.summary = %q{Code coverage for Ruby 1.9 with a powerful configuration library and automatic merging of coverage across test suites} s.test_files = ["features/config_adapters.feature", "features/config_autoload.feature", "features/config_command_name.feature", "features/config_coverage_dir.feature", "features/config_deactivate_merging.feature", "features/config_merge_timeout.feature", "features/config_project_name.feature", "features/config_styles.feature", "features/cucumber_basic.feature", "features/merging_test_unit_and_rspec.feature", "features/rspec_basic.feature", "features/rspec_groups_and_filters_basic.feature", "features/rspec_groups_and_filters_complex.feature", "features/rspec_without_simplecov.feature", "features/step_definitions/html_steps.rb", "features/step_definitions/simplecov_steps.rb", "features/step_definitions/transformers.rb", "features/step_definitions/web_steps.rb", "features/support/env.rb", "features/test_unit_basic.feature", "features/test_unit_groups_and_filters_basic.feature", "features/test_unit_groups_and_filters_complex.feature", "features/test_unit_without_simplecov.feature", "test/faked_project/Gemfile", "test/faked_project/Rakefile", "test/faked_project/cucumber.yml", "test/faked_project/features/step_definitions/my_steps.rb", "test/faked_project/features/support/env.rb", "test/faked_project/features/test_stuff.feature", "test/faked_project/lib/faked_project.rb", "test/faked_project/lib/faked_project/framework_specific.rb", "test/faked_project/lib/faked_project/meta_magic.rb", "test/faked_project/lib/faked_project/some_class.rb", "test/faked_project/spec/faked_spec.rb", "test/faked_project/spec/meta_magic_spec.rb", "test/faked_project/spec/some_class_spec.rb", "test/faked_project/spec/spec_helper.rb", "test/faked_project/test/faked_test.rb", "test/faked_project/test/meta_magic_test.rb", "test/faked_project/test/some_class_test.rb", "test/faked_project/test/test_helper.rb", "test/fixtures/app/controllers/sample_controller.rb", "test/fixtures/app/models/user.rb", "test/fixtures/deleted_source_sample.rb", "test/fixtures/frameworks/rspec_bad.rb", "test/fixtures/frameworks/rspec_good.rb", "test/fixtures/frameworks/testunit_bad.rb", "test/fixtures/frameworks/testunit_good.rb", "test/fixtures/resultset1.rb", "test/fixtures/resultset2.rb", "test/fixtures/sample.rb", "test/helper.rb", "test/shoulda_macros.rb", "test/test_1_8_fallbacks.rb", "test/test_command_guesser.rb", "test/test_deleted_source.rb", "test/test_file_list.rb", "test/test_filters.rb", "test/test_merge_helpers.rb", "test/test_result.rb", "test/test_return_codes.rb", "test/test_source_file.rb", "test/test_source_file_line.rb"] if s.respond_to? :specification_version then current_version = Gem::Specification::CURRENT_SPECIFICATION_VERSION s.specification_version = 3 if Gem::Version.new(Gem::RubyGemsVersion) >= Gem::Version.new('1.2.0') then s.add_runtime_dependency(%q, ["~> 0.5.0"]) s.add_development_dependency(%q, [">= 0.4.5"]) s.add_development_dependency(%q, ["~> 1.0.0"]) s.add_development_dependency(%q, ["~> 1.0.0"]) s.add_development_dependency(%q, ["<= 0.9.0"]) s.add_development_dependency(%q, [">= 2.6.0"]) s.add_development_dependency(%q, ["# 2.10.3"]) else s.add_dependency(%q, ["~> 0.5.0"]) s.add_dependency(%q, [">= 0.4.5"]) s.add_dependency(%q, ["~> 1.0.0"]) s.add_dependency(%q, ["~> 1.0.0"]) s.add_dependency(%q, ["<= 0.9.0"]) s.add_dependency(%q, [">= 2.6.0"]) s.add_dependency(%q, ["# 2.10.3"]) end else s.add_dependency(%q, ["~> 0.5.0"]) s.add_dependency(%q, [">= 0.4.5"]) s.add_dependency(%q, ["~> 1.0.0"]) s.add_dependency(%q, ["~> 1.0.0"]) s.add_dependency(%q, ["<= 0.9.0"]) s.add_dependency(%q, [">= 2.6.0"]) s.add_dependency(%q, ["# 2.10.3"]) end end WARNING: Invalid .gemspec format in '/Library/Ruby/Gems/1.8/specifications/simplecov-0.5.0.gemspec' NOTE: Gem.source_index is deprecated, use Specification. It will be removed on or after 2011-11-01. Gem.source_index called from /Library/Ruby/Gems/1.8/gems/bundler-1.0.10/lib/bundler/shared_helpers.rb:3. git://github.com/ryanb/nested_form.git (at master) is not checked out. Please run `bundle install`
运行gem pristine –all –no-extensions：运行正常直到rails：
Restored rack-mount-0.8.2 Restored rack-openid-1.3.1 Restored rack-ssl-1.3.2 Restored rack-test-0.6.1 ERROR: While executing gem ... (Errno::EACCES) Permission denied - /Users/me/.rvm/gems/ruby-1.9.2-p290/gems/rails-3.1.0/bin/rails
你试过了吗：
bundle install
和：
bundle exec rails s
你能尝试用rvmsudo运行命令吗？
例如，rvmsudo gem pristine ….