使用rvm安装jruby时出错_Ruby_Cygwin_Jruby_Rvm

使用rvm安装jruby时出错

ruby cygwin

使用rvm安装jruby时出错,ruby,cygwin,jruby,rvm,Ruby,Cygwin,Jruby,Rvm,我可以使用rvm在cygwin上安装jruby，但是没有安装jruby gem，任何安装gem的尝试都会失败 $ gem install rake --debug cygpath: can't convert empty path ERROR: While executing gem ... (Errno::ENOENT) No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/

我可以使用rvm在cygwin上安装jruby，但是没有安装jruby gem，任何安装gem的尝试都会失败

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

这是我在安装jruby时遇到的错误，当rvm尝试安装默认gemset时：

Building Nailgun  
jruby-1.6.7 - #installing to /home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7  
jruby-1.6.7 - #importing default gemsets (/home/salil.wadnerkar/.rvm/gemsets/)  
Copying across included gems  
cygpath: can't convert empty path  
Error opening script file: C:/cygwin/home/salil.wadnerkar/.rvm/src/jruby-1.6.7/tool/nailgun/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/bin/gem (The system cannot find the path specified)

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

任何进一步尝试安装任何gem都会遇到类似错误：

$ which gem  
/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/bin/gem  

$ gem install rake  
cygpath: can't convert empty path  
Fetching: rake-0.9.2.2.gem (100%)  
ERROR:  While executing gem ... (Errno::ENOENT)  
    No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

更新：

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

这是我的gem env

$ gem env  
cygpath: can't convert empty path  
RubyGems Environment:  
  - RUBYGEMS VERSION: 1.8.15  
  - RUBY VERSION: 1.9.2 (2012-02-22 patchlevel 312) [java]  
  - INSTALLATION DIRECTORY: /home/salil.wadnerkar/.rvm/gems/jruby-1.6.7  
  - RUBY EXECUTABLE: C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/bin/  
jruby.exe  
  - EXECUTABLE DIRECTORY: /home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/bin  
  - RUBYGEMS PLATFORMS:  
    - ruby  
    - universal-java-1.7  
  - GEM PATHS:  
     - /home/salil.wadnerkar/.rvm/gems/jruby-1.6.7  
     - /home/salil.wadnerkar/.rvm/gems/jruby-1.6.7:/home/salil.wadnerkar/.rvm/ge  
ms/jruby-1.6.7@global  
  - GEM CONFIGURATION:  
     - :update_sources => true  
     - :verbose => true  
     - :benchmark => false  
     - :backtrace => false  
     - :bulk_threshold => 1000  
     - "install" => "--no-rdoc --no-ri --env-shebang"  
     - "update" => "--no-rdoc --no-ri --env-shebang"  
  - REMOTE SOURCES:  
     - http://rubygems.org/

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

编辑：

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

这是我的rvm信息

$ rvm info  

jruby-1.6.7:  

  system:  
    uname:       "CYGWIN_NT-6.1 got002518 1.7.11(0.260/5/3) 2012-02-24 14:05 i686 Cygwin"  
    bash:        "/usr/bin/bash => GNU bash, version 4.1.10(4)-release (i686-pc-cygwin)"  
    zsh:         " => not installed"  

  rvm:  
    version:      "rvm 1.10.3 by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.beginrescueend.com/]"  
    updated:      "18 hours 30 minutes 15 seconds ago"  
cygpath: can't convert empty path  

  ruby:  
    interpreter:  "jruby"  
    version:      "1.6.7"  
    date:         "2012-02-22"  
    platform:     "Windows 7-x86-java"  
    patchlevel:   "TM"  
    full_version: "jruby 1.6.7 (ruby-1.9.2-p312) (2012-02-22 3e82bc8) (Java HotS"ot(TM) Client VM 1.7.0_03) [Windows 7-x86-java]  

  homes:  
    gem:          "/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7"  
    ruby:         "/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7"  

  binaries:  
    ruby:         "/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/bin/ruby"  
    irb:          "/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/bin/irb"  
    gem:          "/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/bin/gem"  
    rake:         "/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/bin/rake"  

  environment:  
    PATH:         "/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/bin:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7@global/bin:/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/bin:/home/salil.wadnerkar/.rvm/bin:/usr/local/bin:/usr/bin:/cygdrive/c/Users/salilw_adm/AppData/Roaming/cabal/bin:/cygdrive/c/Program Files/Common Files/Microsoft Shared/Windows Live:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Program Files/Hummingbird/Connectivity/14.00/Accessories:/cygdrive/c/Program Files/Hummingbird/Connectivity/14.00/NFS Maestro:/cygdrive/c/Program Files/WindowsLive/Shared:/cygdrive/c/Program Files/Java/jdk1.7.0_03/bin:/cygdrive/c/Python27:/cygdrive/c/Python27/Scripts:/cygdrive/c/Program Files/QuickTi  
me/QTSystem:/cygdrive/c/Program Files/Subversion/bin:/cygdrive/c/apache-ant-1.8.2/bin:/cygdrive/c/Ruby192/bin:/cygdrive/c/Users/salil.wadnerkar/AppData/Roaming/cabal/bin"  
    GEM_HOME:     "/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7"  
    GEM_PATH:     "/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7@global"  
    MY_RUBY_HOME: "/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7"  
    IRBRC:        "/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/.irbrc"  
    RUBYOPT:      ""  
    gemset:       ""

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

安装gem时，gem尝试使用Windows样式的路径。事实上，我必须手动创建gem缓存目录，因为它使用的是windows风格的路径，无法找到gem安装的gem缓存目录

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

编辑： rvm似乎正确地将其路径添加到路径的前面

$ echo $PATH  
/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/bin:/home/salil.wadnerkar/.rvm/gems/jruby-  1.6.7@global/bin:/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/bin:/home/salil.wadnerkar/.rvm/bin:/usr/local/bin:/usr/bin:.....

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

编辑：

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

下面是debug命令的输出。我将把“cygpath”放在那里的某个地方，看看它是否修复了路径解释

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

路径格式是您的问题。Cygwin不（也不应该）识别这样的路径。同样的路径应该是：

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

/home/salil.wadnerkar/.rvm/src/jruby-1.6.7/tool/nailgun/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/bin/gem

您的问题可以归结为这一点——一个对Cygwin非常重要的工具被

PATH

系统变量中具有相同名称的另一个工具覆盖，该工具位于Cygwin二进制路径之前的目录中

$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1

（当我试图编译本机gems时，我也遇到了类似的问题，但我的

路径中有Windows版本的GCC，而这是在Cygwin二进制路径之前）
$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1  

一个非常快速的解决方案是编辑您的系统PATH
环境变量，并确保您的Cygwin二进制路径是其中的第一个条目，如下所示：
$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1  

PATH = C:\cygwin\bin;C:\your\other\paths;C:\windows\system32;...

等等
$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1  

当然，退出所有Cygwin控制台并停止任何可能仍在运行的Cygwin程序，然后再次启动控制台/其他程序。一切都应该很好
$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1  

我希望这对你有帮助
$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1  

路径格式是您的问题。Cygwin不（也不应该）识别这样的路径。同样的路径应该是：
$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1  

/home/salil.wadnerkar/.rvm/src/jruby-1.6.7/tool/nailgun/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/bin/gem

您的问题可以归结为这一点——一个对Cygwin非常重要的工具被PATH
系统变量中具有相同名称的另一个工具覆盖，该工具位于Cygwin二进制路径之前的目录中
$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1  

（当我试图编译本机gems时，我也遇到了类似的问题，但我的路径中有Windows版本的GCC，而这是在Cygwin二进制路径之前）
$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1  

一个非常快速的解决方案是编辑您的系统PATH
环境变量，并确保您的Cygwin二进制路径是其中的第一个条目，如下所示：
$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1  

PATH = C:\cygwin\bin;C:\your\other\paths;C:\windows\system32;...

等等
$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1  

当然，退出所有Cygwin控制台并停止任何可能仍在运行的Cygwin程序，然后再次启动控制台/其他程序。一切都应该很好
$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1  

我希望这对你有所帮助。
我也遇到过类似的问题。我尝试了一切可能的方法，包括重新安装Cygwin。最后，我通过从源代码构建jruby克服了这些问题。
我也面临类似的问题。我尝试了一切可能的方法，包括重新安装Cygwin。最后，我通过从源代码构建jruby克服了这些问题。
在我上一篇文章的基础上，我通过Ant build从源代码构建jruby克服了这些问题，正如jruby源代码包中自述的那样。希望这能有所帮助。
在我上一篇文章的基础上，我通过Ant build从源代码构建jruby克服了这些问题，正如jruby源代码包中的自述文件所述。希望这有帮助。
请添加gem env
，或者rvm info
@mpapis，添加了“gem env”和“rvm info”输出。我认为这与GEMPATH有关：$gem install rake cygpath:无法转换空路径获取：rake-0.9.2.2.gem（100%）错误：执行gem时。。。（Errno:：enoint）没有这样的文件或目录-C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem安装其他rubies有效吗？尝试了rvm安装1.9.3和&rvm 1.9.3是否安装gem bundler
？我在这里遇到了完全相同的问题。我在cygwin之外使用JRuby没有问题，但cygpath在cygwin和JRuby中的行为确实很奇怪。我将尝试查找更多信息。请添加gem env
，或者rvm info
@mpapis，添加了“gem env”和“rvm info”输出。我认为这与GEMPATH有关：$gem install rake cygpath:无法转换空路径获取：rake-0.9.2.2.gem（100%）错误：在执行gem时。。。（Errno:：enoint）没有这样的文件或目录-C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem安装其他rubies有效吗？尝试了rvm安装1.9.3和&rvm 1.9.3是否安装gem bundler？我在这里遇到了完全相同的问题。我在cygwin之外使用JRuby没有问题，但cygpath在cygwin和JRuby中的行为确实很奇怪。我会设法找到更多的信息。谢谢你的回答。但是rvm似乎正确地将is path添加到path变量的前面。请看更新。谢谢你的回答。但是rvm似乎正确地将is path添加到path变量的前面。请看更新。非常感谢。我也试过了，但看起来我做得不对。我会再试一次。非常感谢。我也试过了，但看起来我做得不对。我会再试一次。
$ gem install rake --debug  
cygpath: can't convert empty path  
ERROR:  While executing gem ... (Errno::ENOENT)  
No such file or directory - C:/home/salil.wadnerkar/.rvm/gems/jruby-1.6.7/cache/rake-0.9.2.2.gem  
    org/jruby/RubyFile.java:465:in `initialize'  
    org/jruby/RubyIO.java:1135:in `open'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:152:in `download'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:278:in `install'  
    org/jruby/RubyArray.java:1615:in `each'  
    org/jruby/RubyEnumerable.java:956:in `each_with_index'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:270:in `install'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:121:in `execute'  
    org/jruby/RubyArray.java:1615:in `each'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:115:in `execute'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command.rb:278:in `invoke'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:147:in `process_args'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:117:in `run'  
    C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:65:in `run'  
    C:\cygwin\home\salil.wadnerkar\.rvm\rubies\jruby-1.6.7\bin\jgem:25:in `(root)'  
Exception `Gem::SystemExitException' at C:/cygwin/home/salil.wadnerkar/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/1.8/rubygems/user_interaction.rb:332 - Exiting RubyGems with exit_code 1