log.conf

   1 log4perl.category. = TRACE,
   2
   3 log4perl.appender.stderr                          = Log::Log4perl::Appender::Screen
   4 log4perl.appender.stderr.layout                   = Log::Log4perl::Layout::PatternLayout
   5 log4perl.appender.stderr.layout.ConversionPattern = [%d] [%F{1}:%M{1}:%L] [%p] %m%n