安装宝石后，如果你想知道一个特定的宝石在哪里。试着打字:

 gem list

您将能够看到您已安装的宝石列表。现在使用bundle show并命名你想知道路径的宝石，如下所示:

 bundle show <gemName>

或者(bundler的年轻版本):

 bundle info <gemName>

宝石环境工作就像宝石环境。节省一些输入。

# gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 2.0.14
  - RUBY VERSION: 2.0.0 (2014-02-24 patchlevel 451) [i686-linux]
  - INSTALLATION DIRECTORY: /usr/local/lib/ruby/gems/2.0.0
  - RUBY EXECUTABLE: /usr/local/bin/ruby
  - EXECUTABLE DIRECTORY: /usr/local/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86-linux
  - GEM PATHS:
     - /usr/local/lib/ruby/gems/2.0.0
     - /root/.gem/ruby/2.0.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - https://rubygems.org/

gem env列出了可以安装宝石的位置，但可以是10个或更多的位置。如果你想知道一个特定的gem被安装在哪里，你可以执行:

gem list -d <gemname>

示例输出:

tilt (2.0.9)
    Author: Ryan Tomayko
    Homepage: http://github.com/rtomayko/tilt/
    License: MIT
    Installed at: /opt/rubies/ruby-2.5.3/lib/ruby/gems/2.5.0

    Generic interface to multiple Ruby template engines

使用gem环境来了解您的gem环境:

RubyGems Environment:
  - RUBYGEMS VERSION: 2.1.5
  - RUBY VERSION: 2.0.0 (2013-06-27 patchlevel 247) [x86_64-darwin12.4.0]
  - INSTALLATION DIRECTORY: /Users/ttm/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0
  - RUBY EXECUTABLE: /Users/ttm/.rbenv/versions/2.0.0-p247/bin/ruby
  - EXECUTABLE DIRECTORY: /Users/ttm/.rbenv/versions/2.0.0-p247/bin
  - SPEC CACHE DIRECTORY: /Users/ttm/.gem/specs
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-12
  - GEM PATHS:
     - /Users/ttm/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0
     - /Users/ttm/.gem/ruby/2.0.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - https://rubygems.org/
  - SHELL PATH:
     - /Users/ttm/.rbenv/versions/2.0.0-p247/bin
     - /Users/ttm/.rbenv/libexec
     - /Users/ttm/.rbenv/plugins/ruby-build/bin
     - /Users/ttm/perl5/perlbrew/bin
     - /Users/ttm/perl5/perlbrew/perls/perl-5.18.1/bin
     - /Users/ttm/.pyenv/shims
     - /Users/ttm/.pyenv/bin
     - /Users/ttm/.rbenv/shims
     - /Users/ttm/.rbenv/bin
     - /Users/ttm/bin
     - /usr/local/mysql-5.6.12-osx10.7-x86_64/bin
     - /Users/ttm/libsmi/bin
     - /usr/local/bin
     - /usr/bin
     - /bin
     - /usr/sbin
     - /sbin
     - /usr/local/bin

请注意以下两部分:

安装目录 宝石路

要完成其他答案，gem-path gem可以找到特定gem的安装路径。

安装:

gem install gem-path

用法:

gem path rails
=> /home/cbliard/.rvm/gems/ruby-2.1.5/gems/rails-4.0.13
gem path rails '< 4'
=> /home/cbliard/.rvm/gems/ruby-2.1.5/gems/rails-3.2.21

这真的很方便，因为你可以用它来grep或编辑文件:

grep -R 'Internal server error' "$(gem path thin)"
subl "$(gem path thin)"

安装宝石后，如果你想知道一个特定的宝石在哪里。试着打字:

 gem list

您将能够看到您已安装的宝石列表。现在使用bundle show并命名你想知道路径的宝石，如下所示:

 bundle show <gemName>

或者(bundler的年轻版本):

 bundle info <gemName>