lib/redpen-cli-1.1/conf/logback.xml
<configuration>
<appender name="STDERR" class="ch.qos.logback.core.ConsoleAppender">
<Target>System.err</Target>
<encoder>
<Pattern>[%d{yyyy-MM-dd HH:mm:ss.SSS}][%-5level] %class - %msg%n</Pattern>
</encoder>
</appender>
<root>
<level value="Info" />
<appender-ref ref="STDERR"/>
</root>
</configuration>