MultiLogger

multi_io.rb

# So we can log to STDOUT and a file at once. ;)
class MultiIO
  def initialize(*targets)
     @targets = targets
  end

  def write(*args)
    @targets.each {|t| t.write(*args)}
  end

  def close
    @targets.each(&:close)
  end
end

script.rb

require 'multi_io'

def logger
  @logger ||= begin
    log_file = File.open("my_log_file.log", "a")
    target = MultiIO.new(STDOUT, log_file)
    Logger.new(target)
  end
end

# Use

logger.debug("Would have run: #{sql}")
logger.info('Checkpoint!')