script_console_running = ENV.include?('RAILS_ENV') && IRB.conf[:LOAD_MODULES] && IRB.conf[:LOAD_MODULES].include?('console_with_helpers')
rails_running = ENV.include?('RAILS_ENV') && !(IRB.conf[:LOAD_MODULES] && IRB.conf[:LOAD_MODULES].include?('console_with_helpers'))
irb_standalone_running = !script_console_running && !rails_running

if script_console_running
  require 'logger'
  Object.const_set(:RAILS_DEFAULT_LOGGER, Logger.new(STDOUT))
end

script_console_running = (ENV.include?('RAILS_ENV') and IRB.conf[:LOAD_MODULES].include?('console_with_helpers'))
rails_running = (ENV.include?('RAILS_ENV') and !IRB.conf[:LOAD_MODULES].include?('console_with_helpers'))
irb_standalone_running = (!script_console_running and !rails_running)
if script_console_running
  require 'logger'
  Object.const_set(:RAILS_DEFAULT_LOGGER, Logger.new(STDOUT))
end

http://toolmantim.com/article/2007/2/6/system_wide_script_console_logging

Add this to your ~/.irbrc file and you will have inline logging in the console

System Wide Console Logging

rails, ruby

Ruby