gem -v (list what version)
which gem (where is it located?)
gem list (show packages)
sudo gem update --system (sudo takes it to the top level repository, not only local user)
gem --help

<!-- Installing Rails -->
sudo gem install rails
sudo gem install mysql2 
=> WEBrick (rails native webserver!)

gem -v (list what version)
which gem (where is it located?)
gem list (show packages)
sudo gem update --system (sudo takes it to the top level repository, not only local user)
gem --help

<!-- Installing Rails -->
sudo gem install rails
sudo gem install mysql2 (problems with MAMP: http://www.beyondcoding.com/2009/11/10/using-ruby-mysql-gem-with-mamp-1-8-x-on-snow-leopard/)
=> WEBrick (rails native webserver!)

gem -v (list what version)
which gem (where is it located?)
gem list (show packages)
sudo gem update --system (sudo takes it to the top level repository, not only local user)
gem --help

<!-- Installing Rails -->
sudo gem install rails

http://rubygems.org
If you run into problems with MAMP, follow this: http://www.beyondcoding.com/2009/11/10/using-ruby-mysql-gem-with-mamp-1-8-x-on-snow-leopard/

Installing Ruby GEMS (and Rails)

Ruby