From: Ralf Mueller <ralf.mueller@...>
Date: 2012-03-16T21:53:11+09:00
Subject: problems with installing gems

Hi!

I'd like to installed gem with

sudo gem install rails

By default, the rails gem should go into /usr/lib/ruby/gems/1.9.1, but it goes to /root/,gem:

  [ram@thingol:~]sudo gem install rails --no-rdoc
Password:
WARNING:  You don't have /root/.gem/ruby/1.9.1/bin in your PATH,
       gem executables will not run.
Successfully installed rails-3.2.2
1 gem installed
Installing ri documentation for rails-3.2.2...
Updating ri class cache with 1090 classes...

Even if I give it the --install-dir option, it does the same:

[ram@thingol:~]sudo gem install rails --no-rdoc  --install-dir 
/usr/lib/ruby/gems/1.9.1                                                                              
[13:46:27|12-03-16]
WARNING:  You don't have /root/.gem/ruby/1.9.1/bin in your PATH,
       gem executables will not run.
Successfully installed activesupport-3.2.2
Successfully installed rails-3.2.2
2 gems installed

I like the use the $HOME/.gem location for running test as a regular user, but not for root. Here is my gem env:

[ram@thingol:~]gem 
env                                                                                                                                               
[13:49:26|12-03-16]
RubyGems Environment:
   - RUBYGEMS VERSION: 1.8.17
   - RUBY VERSION: 1.9.3 (2012-02-16 patchlevel 125) [x86_64-linux]
   - INSTALLATION DIRECTORY: /usr/lib/ruby/gems/1.9.1
   - RUBY EXECUTABLE: /usr/bin/ruby
   - EXECUTABLE DIRECTORY: /usr/bin
   - RUBYGEMS PLATFORMS:
     - ruby
     - x86_64-linux
   - GEM PATHS:
      - /usr/lib/ruby/gems/1.9.1
      - /home/ram/.gem/ruby/1.9.1
   - GEM CONFIGURATION:
      - :update_sources => true
      - :verbose => true
      - :benchmark => false
      - :backtrace => false
      - :bulk_threshold => 1000
      - "gem" => "--user-install"
   - REMOTE SOURCES:
      - http://rubygems.org/


and for root:
[ram@thingol:~]sudo gem 
env                                                                                                                                          
[13:49:28|12-03-16]
RubyGems Environment:
   - RUBYGEMS VERSION: 1.8.17
   - RUBY VERSION: 1.9.3 (2012-02-16 patchlevel 125) [x86_64-linux]
   - INSTALLATION DIRECTORY: /usr/lib/ruby/gems/1.9.1
   - RUBY EXECUTABLE: /usr/bin/ruby
   - EXECUTABLE DIRECTORY: /usr/bin
   - RUBYGEMS PLATFORMS:
     - ruby
     - x86_64-linux
   - GEM PATHS:
      - /usr/lib/ruby/gems/1.9.1
      - /root/.gem/ruby/1.9.1
   - GEM CONFIGURATION:
      - :update_sources => true
      - :verbose => true
      - :benchmark => false
      - :backtrace => false
      - :bulk_threshold => 1000
      - "gem" => "--user-install"
   - REMOTE SOURCES:
      - http://rubygems.org/


the line with - "gem" => "--user-install" looks suspicious, but how can I change it? Did I do a 
misconfiguration. I have no .gemrc file.

Any help is welcome!

regards
ralf