ruby - gem uninstall rails and it still exist , didn't installed but it said it did -

i git cloned open source software , planning contribute it. installed ruby 1.9.3 rvm , installed gem install rails - fetched version 4.0 (newest version)

i installed ruby 2.0 rvm , did 'gem install rails' fetched me version 4.0

i planning installed ruby 1.9.3 rails 3.2.13 - older version of rails work different software , switch between them using rvm

so since open source software written in 1.9.3 , rails 3.2.13, tried
gem uninstall rails , removed rails version when rails-v , still 4.0

i figured out question there folders associated 4.0 need remove remove 4.0, question suggest install rails 3.2.13 when make new app can rails 3.2.13 new app etc. installed under 1.9.3 when switch 2.00 still has 4.0, tried rails 3.2.13 new app , ran don't think should.

i growing semi-frustrated this, , wish can me while browse more questions.

you should create new gemset within rvm this. way can use different version of ruby , rails system default. switch ruby version 1.9.3 in rvm , use rvm gemset create <name-here> , rvm gemset use <name-here> create , use new gemset. switch directory of project cloned , run bundle install install of necessary gems, including rails (assuming rails version specified in gemfile.)