# Problem with gem, after upgrading to 1.3.1 on linux (ubuntu 8.04) **URL:** \ **Category:** Ruby\ **Created:** [January 2, 2009, 1:02am UTC](https://www.ruby-forum.com/t/problem-with-gem-after-upgrading-to-1-3-1-on-linux-ubuntu-8-04/156729 "2009-01-02T01:02:03Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![pabloq](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/ec9cab/32.png) [@pabloq](https://www.ruby-forum.com/u/pabloq)\ **Post date:** [January 2, 2009, 1:02am UTC](https://www.ruby-forum.com/t/problem-with-gem-after-upgrading-to-1-3-1-on-linux-ubuntu-8-04/156729/1 "2009-01-02T01:02:03Z")
Ruby doesn’t see my installed gems after upgrading to 1.3.1 Please help!! ~# ruby -v ruby 1.8.7 (2008-08-11 patchlevel 72) [i686-linux] ~# gem -v 1.3.1 ~# gem env RubyGems Environment: - RUBYGEMS VERSION: 1.3.1 - RUBY VERSION: 1.8.7 (2008-08-11 patchlevel 72) [i686-linux] - INSTALLATION DIRECTORY: /usr/local/lib/ruby/gems/1.8 - RUBY EXECUTABLE: /usr/local/bin/ruby - EXECUTABLE DIRECTORY: /usr/local/bin - RUBYGEMS PLATFORMS: - ruby - x86-linux - GEM PATHS: - /usr/local/lib/ruby/gems/1.8 - /root/.gem/ruby/1.8 - GEM CONFIGURATION: - :update\_sources =\> trueTahks - :verbose =\> true - :benchmark =\> false - :backtrace =\> false - :bulk\_threshold =\> 1000 - REMOTE SOURCES: - [http://gems.rubyforge.org/](http://gems.rubyforge.org/) ~# gem list \*\*\* LOCAL GEMS \*\*\* net-mdns (0.4) rubygems-update (1.3.1) I tried to run this test file (test.rb): #test.rb require ‘rubygem’ require ‘net-mdns’ ~#ruby test.rb /usr/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:31:in `gem_original_require': no such file to load -- net-mdns (LoadError) from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require’ from test.rb:2 I don’t know what to do… I have built the ruby and gem from the source but I don’t know how to uninstall it… make file doesn’t have uninstall option Please help I really don’t how to solve this. Thanks ---
**Author:** ![pabloq](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/ec9cab/32.png) [@pabloq](https://www.ruby-forum.com/u/pabloq)\ **Post date:** [January 2, 2009, 1:45am UTC](https://www.ruby-forum.com/t/problem-with-gem-after-upgrading-to-1-3-1-on-linux-ubuntu-8-04/156729/2 "2009-01-02T01:45:20Z")
Pablo Q. wrote: > ~# gem env > - /usr/local/lib/ruby/gems/1.8 > ~# gem list > > \*\*\* LOCAL GEMS \*\*\* > > net-mdns (0.4) > rubygems-update (1.3.1) > > I tried to run this test file (test.rb): > #test.rb > require ‘rubygem’ TRY: require ‘rubygems’ easy mistake to make - I’ve done it! > I don’t know how to uninstall it… make file doesn’t have uninstall option > > Please help I really don’t how to solve this. > > Thanks – ```auto Tom C., MS MA, LMHC - Private practice Psychotherapist Bellingham, Washington, U.S.A: (360) 920-1226 << removed_email_address@domain.invalid >> (email) << TomCloyd.com >> (website) << sleightmind.wordpress.com >> (mental health weblog) ``` ---
**Author:** ![pabloq](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/ec9cab/32.png) [@pabloq](https://www.ruby-forum.com/u/pabloq)\ **Post date:** [January 2, 2009, 2:06am UTC](https://www.ruby-forum.com/t/problem-with-gem-after-upgrading-to-1-3-1-on-linux-ubuntu-8-04/156729/3 "2009-01-02T02:06:23Z")
Sorry, I wrote wrong the mail, test.rb is fine (require ‘rubygems’)… error is on line 2 2009/1/1 Tom C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![pabloq](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/ec9cab/32.png) [@pabloq](https://www.ruby-forum.com/u/pabloq)\ **Post date:** [January 2, 2009, 9:18am UTC](https://www.ruby-forum.com/t/problem-with-gem-after-upgrading-to-1-3-1-on-linux-ubuntu-8-04/156729/4 "2009-01-02T09:18:43Z")
This appears to be the same problem I reported in another thread. After updating to rubygems 1.3.1 all installed gems seem to have disappeared. As far as I can tell, the problem is the installation directory. Look at the gem env output and notice this line: ``` - INSTALLATION DIRECTORY: /usr/lib/ruby/gems/1.8 ``` Now, if you have the same problem that I do, there should be NO gems in this directory. All of your gems should be found in: ``` /var/lib/gems/1.8/gems/ ``` Thus, it seems that rubygems 1.3.1 somehow changes the installation directory and looses track of where your gems really are. You agree? Is changing rubygem’s installation directory an easy thing to do? Thanks! Giuseppe ---
**Author:** ![pabloq](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/ec9cab/32.png) [@pabloq](https://www.ruby-forum.com/u/pabloq)\ **Post date:** [January 2, 2009, 9:27am UTC](https://www.ruby-forum.com/t/problem-with-gem-after-upgrading-to-1-3-1-on-linux-ubuntu-8-04/156729/5 "2009-01-02T09:27:07Z")
Based on this page: [http://www.rubygems.org/read/chapter/3](http://www.rubygems.org/read/chapter/3), I did: $ export GEM\_HOME=/var/lib/gems/1.8 $ gem env and now rubygems sees all gems. I’m not a linux guru, though, so I don’t know if this is the right way to go. For one thing, I’m pretty sure that this environment variable will be lost, should I need to reboot the machine. –Giuseppe ---
**Author:** ![pabloq](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/ec9cab/32.png) [@pabloq](https://www.ruby-forum.com/u/pabloq)\ **Post date:** [January 2, 2009, 5:17pm UTC](https://www.ruby-forum.com/t/problem-with-gem-after-upgrading-to-1-3-1-on-linux-ubuntu-8-04/156729/6 "2009-01-02T17:17:58Z")
Thank you very much, now I know that It was due to this specific gem, I just change to the old version of ruby (the one that come with synaptic in Ubuntu) and I was able to see all my gems but I still having problems with this specific gem (net-mdns). Does somebody knows why ‘net-mdns’ don’t work in linux (ubuntu 8.04)?? ~# ruby -v ruby 1.8.6 (2007-09-24 patchlevel 111) [i486-linux] ~# gem env RubyGems Environment: - RUBYGEMS VERSION: 1.3.1 - RUBY VERSION: 1.8.6 (2007-09-24 patchlevel 111) [i486-linux] - INSTALLATION DIRECTORY: /usr/lib/ruby/gems/1.8 - RUBY EXECUTABLE: /usr/bin/ruby1.8 - EXECUTABLE DIRECTORY: /usr/bin - RUBYGEMS PLATFORMS: - ruby - x86-linux - GEM PATHS: - /usr/lib/ruby/gems/1.8 - /root/.gem/ruby/1.8 - GEM CONFIGURATION: - :update\_sources =\> true - :verbose =\> true - :benchmark =\> false - :backtrace =\> false - :bulk\_threshold =\> 1000 - REMOTE SOURCES: - [http://gems.rubyforge.org/](http://gems.rubyforge.org/) ~# gem list \*\*\* LOCAL GEMS \*\*\* abstract (1.0.0) actionmailer (2.1.0) … net-mdns (0.4) net-scp (1.0.1) net-sftp (2.0.1) net-ssh (2.0.4) net-ssh-gateway (1.0.0) … twitter (0.3.7) ~# irb irb(main):001:0\> RUBY\_VERSION =\> “1.8.6” irb(main):002:0\> require ‘rubygems’ =\> true irb(main):003:0\> require ‘twitter’ =\> true irb(main):004:0\> require ‘net-mdns’ MissingSourceFile: no such file to load – net-mdns from /usr/local/lib/site\_ruby/1.8/rubygems/custom\_require.rb:31:in `gem_original_require' from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `require’ from /usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active\_support/dependencies.rb:509:in `require' from /usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:354:in `new\_constants\_in’ from /usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active\_support/dependencies.rb:509:in `require’ from (irb):4 irb(main):005:0\> Thank you 2009/1/2 Giuseppe B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)