我以前使用捆绑安装时没有遇到任何错误，但突然之间我发现了捆绑：找不到命令＆＃39;使用捆绑安装时。
gem env
RubyGems Environment:
- RUBYGEMS VERSION: 2.2.2
- RUBY VERSION: 2.1.2 (2014-05-08 patchlevel 95) [x86_64-darwin15.0]
- INSTALLATION DIRECTORY: /usr/local/opt/gems
- RUBY EXECUTABLE: /usr/local/opt/rbenv/versions/2.1.2/bin/ruby
- EXECUTABLE DIRECTORY: /usr/local/opt/gems/bin
- SPEC CACHE DIRECTORY: /Users/will/.gem/specs
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-darwin-15
- GEM PATHS:
- /usr/local/opt/gems
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- https://rubygems.org/
- SHELL PATH:
- /usr/local/opt/rbenv/versions/2.1.2/bin
- /usr/local/Cellar/rbenv/1.0.0/libexec
- /usr/local/opt/rbenv/shims
- /Users/will/.rbenv/bin
- /Users/will/.rbenv/shims
- /usr/local/bin
- /usr/local/sbin
- ~/bin
- /Users/will/.rbenv/bin
- /Users/will/.rbenv/shims
- /usr/local/bin
- /usr/bin
- /bin
- /usr/sbin
- /sbin
- /opt/X11/bin
- /opt/ruby-enterprise-1.8.7-2010.02/bin
echo $ PATH
/usr/local/opt/rbenv/shims:/Users/will/.rbenv/bin:/Users/will/.rbenv/shims:
/usr/local/bin:/usr/local/sbin:~/bin:/Users/will/.rbenv/bin:/Users/will/.rbenv
/shims:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/opt/ruby-
enterprise-1.8.7-2010.02/bin
哪个宝石
/usr/local/opt/rbenv/shims/gem
gem list bundle
*** LOCAL GEMS ***
bundler (1.12.5)