# Problem with installing Rails 2.3.8 on Ubuntu 10.04 **URL:** \ **Category:** Rails\ **Created:** [July 30, 2010, 8:23am UTC](https://www.ruby-forum.com/t/problem-with-installing-rails-2-3-8-on-ubuntu-10-04/192431 "2010-07-30T08:23:46Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Mars\_Cheng](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e9c0ed/32.png) [@Mars\_Cheng](https://www.ruby-forum.com/u/Mars_Cheng)\ **Post date:** [July 30, 2010, 8:23am UTC](https://www.ruby-forum.com/t/problem-with-installing-rails-2-3-8-on-ubuntu-10-04/192431/1 "2010-07-30T08:23:46Z")
hi, I installed the ruby-full package. After downloading the rubygems 1.3.7, I installed it without any problem. I guess it should have installed relative gems by default, such as activesupport. Any help is appreciated. Mars root@mars-laptop:~# uname -a Linux mars-laptop 2.6.32-21-generic #32-Ubuntu SMP Fri Apr 16 08:10:02 UTC 2010 i686 GNU/Linux root@mars-laptop:~# ruby -v ruby 1.8.7 (2010-01-10 patchlevel 249) [i486-linux] root@mars-laptop:~# gem -v 1.3.7 root@mars-laptop:~# gem install rails --debug Exception `NameError' at /usr/local/lib/site_ruby/1.8/rubygems/ command_manager.rb:164 - uninitialized constant Gem::Commands::InstallCommand Exception`NoMethodError’ at /usr/lib/ruby/1.8/rational.rb:78 - undefined method `gcd' for Rational(1, 2):Rational Exception`Gem::LoadError’ at /usr/local/lib/site\_ruby/1.8/rubygems.rb: 779 - Could not find RubyGem test-unit (\>= 0) Exception `Gem::LoadError’ at /usr/local/lib/site\_ruby/1.8/rubygems.rb: 779 - Could not find RubyGem sources (\> 0.0.1) Exception `Errno::EEXIST' at /usr/lib/ruby/1.8/fileutils.rb:243 - File exists - /root/.gem/specs/rubygems.org%80 Exception`EOFError’ at /usr/lib/ruby/1.8/net/protocol.rb:135 - end of file reached Exception `Errno::EEXIST' at /usr/lib/ruby/1.8/fileutils.rb:243 - File exists - /root/.gem/specs/rubygems.org%80 Exception`IOError’ at /usr/local/lib/site\_ruby/1.8/rubygems/format.rb: 50 - closed stream Exception `Errno::EEXIST' at /usr/lib/ruby/1.8/fileutils.rb:243 - File exists - /usr/lib/ruby/gems/1.8 Exception`Gem::InstallError’ at /usr/local/lib/site\_ruby/1.8/rubygems/ installer.rb:233 - rails requires activesupport (= 2.3.8, runtime) ERROR: Error installing rails: rails requires activesupport (= 2.3.8, runtime) root@mars-laptop:~# ---
**Author:** ![Mars\_Cheng](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e9c0ed/32.png) [@Mars\_Cheng](https://www.ruby-forum.com/u/Mars_Cheng)\ **Post date:** [July 30, 2010, 11:58am UTC](https://www.ruby-forum.com/t/problem-with-installing-rails-2-3-8-on-ubuntu-10-04/192431/2 "2010-07-30T11:58:04Z")
Hi, now you have rails 2.2.3 installed, the easyest way is to run the following command : (with sudo if needed) “gem update rails” : will only update the rails gem “gem update --system” : will update all your installed gems to the last stable version