or download this
log4perl.logger = DEBUG, FD, S
log4perl.logger = INFO, FI
...
log4perl.appender.FE.mode=append
log4perl.appender.FE.layout = Log::Log4perl::Layout::PatternLayout
log4perl.appender.FE.layout.ConversionPattern = %d %p: %m %F{1}(%L)
+%n