gem

[madunix]

am trying to install Metasploit framework 3 on my ubuntu using
the following link
http://ubuntuforums.org/showthread.php?t=512513&highlight=install+metasploit

but still having problem as attached

-mu
On Wed, Sep 9, 2009 at 6:52 PM, madunix<madunix at gmail.com> wrote:
>  ruby setup.rb
>
>
> As of RubyGems 0.8.0, library stubs are no longer needed.
> Searching $LOAD_PATH for stubs to optionally delete (may
> take a while)...
> ...done.
> No library stubs found.
>
> root at netbook:/opt/ruby/rubygems-0.9.4# gem install rails –include-dependencies
> Install required dependency actionpack? [Yn]  y
> Install required dependency rack? [Yn]  y
> Install required dependency fcgi? [Yn]  y
> Building native extensions.  This could take a while...
> ERROR:  While executing gem ... (Gem::Installer::ExtensionBuildError)
>    ERROR: Failed to build gem native extension.
>
> ruby extconf.rb install rails –include-dependencies
> extconf.rb:1:in `require': no such file to load -- mkmf (LoadError)
>        from extconf.rb:1
>
>
> Gem files will remain installed in
> /usr/lib/ruby/gems/1.8/gems/fcgi-0.8.7 for inspection.
> Results logged to /usr/lib/ruby/gems/1.8/gems/fcgi-0.8.7/ext/fcgi/gem_make.out
>
>
>> having problem to install the following ..
>> root at netbook:/opt/ruby/rubygems-0.9.4# gem install rails –include-dependencies
>> Bulk updating Gem source index for: http://gems.rubyforge.org
>>
>> ERROR:  While executing gem ... (Gem::GemNotFoundException)
>>    Could not find rails (> 0) in any repository
>>
>>
>> Linux netbook 2.6.28-15-generic #49-Ubuntu SMP Tue Aug 18 18:40:08 UTC
>> 2009 i686 GNU/Linux
>>
>