Ruby on Rails Handy Guide

Some Useful command
To install ruby Gem,
gem install [gem_name]
eg, gem install rails

To install ruby Gem with certain version,
gem install [gem_name] –version=x.x.x
eg, gem install rails –version=2.3.5
eg, gem install rails -v=2.3.5

To update ruby Gem,
gem update [gem_name]
eg, gem update mysql

To update ruby Gem with latest version(for all)
gem update –system

To check missing gem
rake gems:install (must run from rails apps folder)

To install gem with lesser space
gem install –no-rdoc –no-ri [gem_name]
eg. gem install –no-rdoc –no-ri rails

To check RoR log,
Path: /home/[cpanel_username]/etc/rails_apps/[apps_name]/log

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