% perl sample11.pl
2008/08/13 22:33:50 fatal message
main warn  message 2
main error message 2
main fatal message 2

% perl sample11.pl -v
2008/08/13 22:33:52 info  message
2008/08/13 22:33:52 warn  message
2008/08/13 22:33:52 error message
2008/08/13 22:33:52 fatal message
main info  message 2
main warn  message 2
main error message 2
main fatal message 2

% perl sample11.pl -d
2008/08/13 22:33:55 debug message
2008/08/13 22:33:55 info  message
2008/08/13 22:33:55 warn  message
2008/08/13 22:33:55 error message
2008/08/13 22:33:55 fatal message
main debug message 2
main info  message 2
main warn  message 2
main error message 2
main fatal message 2