1

我在 Ubuntu 11.10 上运行 RubyMine 4，在 RubyMine 中一切都很好，我可以运行服务器、开发等.. 但是，当我需要在命令行上工作时，我什么也做不了..

我 cd 到我的应用程序目录，然后我尝试： 

$ rails s

我得到：

The program 'rails' is currently not installed.  You can install it by typing:
sudo apt-get install rails

奇怪了，怎么没安装，RubyMine IDE可以正常工作！

我需要使用命令行来卸载gem，发现我不能使用它应该使用的命令行..

sam@ubuntu:~/Documents/RoR/course_builder$ gem uninstall 'capybara-firebug'
ERROR:  While executing gem ... (Gem::InstallError)
    cannot uninstall, check `gem list -d capybara-firebug`

$ gem list -d会给我：

*** LOCAL GEMS ***

那里没有宝石..

如果我输入：

$ bundle install

我得到：

/usr/lib/ruby/vendor_ruby/bundler/rubygems_ext.rb:8:in `require': no such file to load -- rubygems (LoadError)
    from /usr/lib/ruby/vendor_ruby/bundler/rubygems_ext.rb:8
    from /usr/lib/ruby/vendor_ruby/bundler.rb:11:in `require'
    from /usr/lib/ruby/vendor_ruby/bundler.rb:11
    from /usr/bin/bundle:4:in `require'
    from /usr/bin/bundle:4

虽然bundle install在 RubyMine 内部工作正常

那么，我在这里缺少什么？！为什么我不能使用命令行..？

这是我的宝石环境：

RUBYGEMS VERSION: 1.8.10
RUBY VERSION: 1.9.3 (2011-10-30 patchlevel 0) [i686-linux]
INSTALLATION DIRECTORY: /home/sam/.rvm/gems/ruby-1.9.3-p0@global
RUBY EXECUTABLE: /home/sam/.rvm/rubies/ruby-1.9.3-p0/bin/ruby
EXECUTABLE DIRECTORY: /home/sam/.rvm/gems/ruby-1.9.3-p0@global/bin
RUBYGEMS PLATFORMS:
  ruby
  x86-linux
GEM PATHS:
   /home/sam/.rvm/gems/ruby-1.9.3-p0@global
GEM CONFIGURATION:
   :update_sources => true
   :verbose => true
   :benchmark => false
   :backtrace => false
   :bulk_threshold => 1000
REMOTE SOURCES:
   http://rubygems.org/
----------------------
IDE: JetBrains RubyMine 4.0.1, build #RM-113.20
OS: Linux 3.0.0-16-generic[i386]
Java: 1.6.0_23-b23
RubyMine SDK Environment:
Sdk: RVM: ruby-1.9.3-p0 [global]
Sdk Version: ver.1.9.3p0 ( revision 33570) p0
Ruby Interpreter: /home/sam/.rvm/rubies/ruby-1.9.3-p0/bin/ruby
RVM Sdk: yes, gemset:global
RVM Home: /home/sam/.rvm
Sdk Language Level: 1.9
Sdk Load Path:
     ~/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1
     ~/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby/1.9.1/i686-linux
     ~/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/site_ruby
     ~/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/vendor_ruby/1.9.1
     ~/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/vendor_ruby/1.9.1/i686-linux
     ~/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/vendor_ruby
     ~/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1
     ~/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/i686-linux
     /opt/RubyMine-4.0.1/rubystubs19
Sdk Gem paths: 
     ~/.rvm/gems/ruby-1.9.3-p0@global/bundler/gems
     ~/.rvm/gems/ruby-1.9.3-p0@global/gems
Gems used for 'hope':
     xpath (bundled(0.1.4))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/xpath-0.1.4
     rack (1.3.6)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rack-1.3.6
     rspec-expectations (2.7.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rspec-expectations-2.7.0
     rack-mount (bundled(0.8.3))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rack-mount-0.8.3
     rubyzip (bundled(0.9.5))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rubyzip-0.9.5
     bcrypt-ruby (bundled(3.0.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/bcrypt-ruby-3.0.1
     activemodel (bundled(3.1.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/activemodel-3.1.0
     client_side_validations (3.1.4)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/client_side_validations-3.1.4
     cocoon (bundled(1.0.15))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/cocoon-1.0.15
     diff-lcs (1.1.3)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/diff-lcs-1.1.3
     sprockets (2.0.3)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/sprockets-2.0.3
     rack-ssl (1.3.2)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rack-ssl-1.3.2
     simple_form (1.5.2)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/simple_form-1.5.2
     thor (bundled(0.14.6))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/thor-0.14.6
     rdoc (3.12)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rdoc-3.12
     rubyzip (bundled(0.9.6.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rubyzip-0.9.6.1
     foreigner (1.1.1)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/foreigner-1.1.1
     mocha (bundled(0.10.3))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/mocha-0.10.3
     mime-types (bundled(1.17.2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/mime-types-1.17.2
     treetop (bundled(1.4.10))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/treetop-1.4.10
     therubyracer (bundled(0.9.9))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/therubyracer-0.9.9
     kaminari (bundled(0.13.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/kaminari-0.13.0
     selenium-webdriver (bundled(2.17.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/selenium-webdriver-2.17.0
     coffee-script (2.2.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/coffee-script-2.2.0
     sass (bundled(3.1.14))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/sass-3.1.14
     mail (bundled(2.3.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/mail-2.3.0
     rack-mount (0.8.3)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rack-mount-0.8.3
     will_paginate (bundled(3.0.3))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/will_paginate-3.0.3
     i18n (0.6.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/i18n-0.6.0
     rspec-mocks (bundled(2.7.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rspec-mocks-2.7.0
     ansi (bundled(1.4.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/ansi-1.4.1
     orm_adapter (0.0.6)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/orm_adapter-0.0.6
     rspec-core (2.7.1)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rspec-core-2.7.1
     pg (0.13.2)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/pg-0.13.2
     metaclass (0.0.1)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/metaclass-0.0.1
     builder (3.0.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/builder-3.0.0
     execjs (bundled(1.3.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/execjs-1.3.0
     uglifier (bundled(1.2.3))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/uglifier-1.2.3
     jquery-rails (bundled(1.0.19))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/jquery-rails-1.0.19
     rspec-expectations (bundled(2.7.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rspec-expectations-2.7.0
     bundler (1.0.21)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.0.21
     postgres-pr (bundled(0.6.3))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/postgres-pr-0.6.3
     capybara-firebug (bundled(1.0.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/capybara-firebug-1.0.1
     rspec-rails (bundled(2.7.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rspec-rails-2.7.0
     warden (1.1.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/warden-1.1.0
     rails (3.1.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rails-3.1.0
     sass-rails (3.1.5)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/sass-rails-3.1.5
     capybara-firebug (1.0.1)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/capybara-firebug-1.0.1
     rspec (2.7.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rspec-2.7.0
     actionpack (3.1.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/actionpack-3.1.0
     rack (bundled(1.3.6))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rack-1.3.6
     mime-types (1.17.2)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/mime-types-1.17.2
     capybara (bundled(1.1.2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/capybara-1.1.2
     nokogiri (1.5.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/nokogiri-1.5.0
     rake (0.9.2.2)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rake-0.9.2.2
     nokogiri (bundled(1.5.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/nokogiri-1.5.0
     sqlite3 (1.3.5)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/sqlite3-1.3.5
     actionmailer (bundled(3.1.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/actionmailer-3.1.0
     therubyracer (0.9.9)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/therubyracer-0.9.9
     metaclass (bundled(0.0.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/metaclass-0.0.1
     launchy (2.0.5)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/launchy-2.0.5
     rack-cache (bundled(1.0.3))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rack-cache-1.0.3
     rdoc (bundled(3.12))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rdoc-3.12
     polyglot (0.3.3)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/polyglot-0.3.3
     factory_girl (bundled(2.4.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/factory_girl-2.4.0
     tilt (bundled(1.3.3))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/tilt-1.3.3
     uglifier (1.2.3)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/uglifier-1.2.3
     rb-fsevent (bundled(0.4.3.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rb-fsevent-0.4.3.1
     uglifier (bundled(1.2.2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/uglifier-1.2.2
     treetop (1.4.10)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/treetop-1.4.10
     warden (bundled(1.1.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/warden-1.1.0
     coffee-script-source (1.2.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/coffee-script-source-1.2.0
     execjs (bundled(1.2.13))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/execjs-1.2.13
     guard-spork (bundled(0.5.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/guard-spork-0.5.1
     ffi (1.0.11)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/ffi-1.0.11
     rb-fsevent (bundled(0.9.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rb-fsevent-0.9.0
     ffi (bundled(1.0.11))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/ffi-1.0.11
     arel (bundled(2.2.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/arel-2.2.1
     guard (bundled(1.0.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/guard-1.0.0
     kaminari (0.13.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/kaminari-0.13.0
     validate_url (bundled(0.2.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/validate_url-0.2.0
     coffee-rails (3.1.1)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/coffee-rails-3.1.1
     actionmailer (3.1.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/actionmailer-3.1.0
     turn (bundled(0.9.2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/turn-0.9.2
     capybara-webkit (bundled(0.9.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/capybara-webkit-0.9.0
     coffee-rails (bundled(3.1.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/coffee-rails-3.1.1
     rspec-mocks (2.7.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rspec-mocks-2.7.0
     childprocess (bundled(0.3.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/childprocess-0.3.1
     sprockets (bundled(2.0.3))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/sprockets-2.0.3
     execjs (1.3.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/execjs-1.3.0
     tilt (1.3.3)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/tilt-1.3.3
     rspec (bundled(2.7.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rspec-2.7.0
     spork (bundled(0.9.0.rc9))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/spork-0.9.0.rc9
     rspec-rails (2.7.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rspec-rails-2.7.0
     haml (bundled(3.1.4))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/haml-3.1.4
     rake (bundled(0.9.2.2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rake-0.9.2.2
     tzinfo (0.3.31)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/tzinfo-0.3.31
     bcrypt-ruby (3.0.1)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/bcrypt-ruby-3.0.1
     pg (bundled(0.13.2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/pg-0.13.2
     actionpack (bundled(3.1.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/actionpack-3.1.0
     devise (bundled(1.5.2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/devise-1.5.2
     capybara-webkit (bundled(0.8.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/capybara-webkit-0.8.0
     database_cleaner (0.7.1)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/database_cleaner-0.7.1
     foreigner (bundled(1.1.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/foreigner-1.1.1
     addressable (bundled(2.2.6))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/addressable-2.2.6
     selenium-webdriver (bundled(2.19.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/selenium-webdriver-2.19.0
     rspec-core (bundled(2.7.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rspec-core-2.7.1
     simple_form (bundled(1.5.2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/simple_form-1.5.2
     builder (bundled(3.0.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/builder-3.0.0
     erubis (bundled(2.7.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/erubis-2.7.0
     orm_adapter (bundled(0.0.6))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/orm_adapter-0.0.6
     validate_url (0.2.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/validate_url-0.2.0
     cocoon (1.0.15)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/cocoon-1.0.15
     addressable (2.2.6)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/addressable-2.2.6
     haml (3.1.4)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/haml-3.1.4
     sass (bundled(3.1.12))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/sass-3.1.12
     hike (1.2.1)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/hike-1.2.1
     libv8 (bundled(3.3.10.4))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/libv8-3.3.10.4-x86-linux
     coffee-script-source (bundled(1.2.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/coffee-script-source-1.2.0
     erubis (2.7.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/erubis-2.7.0
     spork (bundled(1.0.0rc2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/spork-1.0.0rc2
     factory_girl_rails (bundled(1.5.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/factory_girl_rails-1.5.0
     capybara (1.1.2)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/capybara-1.1.2
     tzinfo (bundled(0.3.31))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/tzinfo-0.3.31
     mocha (bundled(0.10.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/mocha-0.10.1
     jquery-rails (1.0.19)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/jquery-rails-1.0.19
     json (1.6.5)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/json-1.6.5
     guard (bundled(0.10.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/guard-0.10.0
     factory_girl (bundled(2.5.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/factory_girl-2.5.1
     factory_girl_rails (bundled(1.6.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/factory_girl_rails-1.6.0
     hike (bundled(1.2.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/hike-1.2.1
     rack-cache (1.0.3)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rack-cache-1.0.3
     activeresource (3.1.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/activeresource-3.1.0
     railties (bundled(3.1.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/railties-3.1.0
     libv8 (3.3.10.4)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/libv8-3.3.10.4-x86-linux
     rack-test (bundled(0.6.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rack-test-0.6.1
     sass-rails (bundled(3.1.5))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/sass-rails-3.1.5
     i18n (bundled(0.6.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/i18n-0.6.0
     multi_json (1.0.4)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/multi_json-1.0.4
     sqlite3 (bundled(1.3.5))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/sqlite3-1.3.5
     xpath (0.1.4)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/xpath-0.1.4
     coffee-script (bundled(2.2.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/coffee-script-2.2.0
     activemodel (3.1.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/activemodel-3.1.0
     turn (bundled(0.8.3))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/turn-0.8.3
     activesupport (3.1.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/activesupport-3.1.0
     will_paginate (bundled(3.0.2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/will_paginate-3.0.2
     devise (1.5.2)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/devise-1.5.2
     ansi (bundled(1.4.2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/ansi-1.4.2
     polyglot (bundled(0.3.3))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/polyglot-0.3.3
     json (bundled(1.6.5))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/json-1.6.5
     mail (2.3.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/mail-2.3.0
     client_side_validations (bundled(3.1.4))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/client_side_validations-3.1.4
     activerecord (3.1.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/activerecord-3.1.0
     rack-ssl (bundled(1.3.2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rack-ssl-1.3.2
     guard-spork (bundled(0.5.2))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/guard-spork-0.5.2
     childprocess (bundled(0.3.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/childprocess-0.3.0
     rack-test (0.6.1)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/rack-test-0.6.1
     activerecord (bundled(3.1.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/activerecord-3.1.0
     arel (2.2.1)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/arel-2.2.1
     activesupport (bundled(3.1.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/activesupport-3.1.0
     rails (bundled(3.1.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/rails-3.1.0
     activeresource (bundled(3.1.0))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/activeresource-3.1.0
     launchy (bundled(2.0.5))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/launchy-2.0.5
     railties (3.1.0)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/railties-3.1.0
     ansi (1.4.2)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/ansi-1.4.2
     multi_json (bundled(1.0.4))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/multi_json-1.0.4
     thor (0.14.6)
         ~/.rvm/gems/ruby-1.9.3-p0@global/gems/thor-0.14.6
     database_cleaner (bundled(0.7.1))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/database_cleaner-0.7.1
     diff-lcs (bundled(1.1.3))
         ~/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/diff-lcs-1.1.3

编辑

如果我输入 rvm，我会得到：

    = rvm

    * http://github.com/wayneeseguin/rvm

    == DESCRIPTION:

    RVM is the Ruby enVironment Manager (rvm).
    It manages Ruby application environments and switching between them.

    == Usage

      rvm [Flags] [Options] Action [Implementation[,Implementation[,...]]

    == Flags

      --default     - with 'rvm use X', sets the default ruby for new shells to X.
      --debug       - Toggle debug mode on for very verbose output.
      --trace       - Toggle trace mode on to see EVERYTHING rvm is doing.
      --force       - Force install, removes old install & source before install.

....

    == Contributions:

      Any and all contributions offered in any form, past present or future, to the
      RVM project are understood to be in complete agreement and acceptance with the
      Apache Licence v2.0.

    == INSTALL:

    See http://rvm.beginrescueend.com/rvm/install/

    or just use:

        bash < <(curl -s https://rvm.beginrescueend.com/install/rvm)

    == LICENSE:

    Copyright (c) 2009-2011 Wayne E. Seguin

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

如果我输入 ruby​​ -v

sam@ubuntu:~/Documents/RoR/course_builder$ ruby -v
ruby 1.8.7 (2011-06-30 patchlevel 352) [i686-linux]
4

2 回答 2

6

我不相信您的 rvm 设置正确。为简单起见，让我们按照此处的说明从头开始：

http://beginrescueend.com/rvm/install/

在命令行中安装。

user$ bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer )

打开主目录中的 .bashrc 文件夹。

user$ vim .bashrc

编辑并添加：

[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # Load RVM function

获取您的 .bashrc 文件并关闭终端

user$ source ~/.bashrc
user$ exit

重新打开终端并检查 rvm 是否正常工作。

user$ type rvm | head -1

如果它返回

rvm is a function

我们很好。检查您是否具备所有先决条件：

rvm requirements

根据需要安装。选择你最喜欢的 ruby​​ 风格（它似乎是 1.8.7，如果是，请遵循确切的命令或用你的选择替换它）。

rvm install 1.8.7

完成后，

rvm use 1.8.7 --default

如果这不起作用，请通过运行更新帖子

which ruby
于 2012-02-28T04:37:45.457 回答
0

/bin/bash --login在执行任何rails相关操作之前尝试在命令行中运行。如果有效，请在您打开的每个新命令行中再次执行此操作。

于 2013-07-29T21:03:25.293 回答