# File lib/new_relic/agent/agent_logger.rb, line 164
      def set_log_format!
        @hostname = NewRelic::Agent::Hostname.get
        @prefix = wants_stdout? ? '** [NewRelic]' : ''
        @log.formatter = Proc.new do |severity, timestamp, progname, msg|
          "#{@prefix}[#{timestamp.strftime("%F %H:%M:%S %z")} #{@hostname} (#{$$})] #{severity} : #{msg}\n"
        end
      end