Hello J.V., You can have a secondary date token in the file name pattern. Example: <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <file>logFile.log</file> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <!--daily rollover, but with timestamp including hour and minute--> <fileNamePattern> logFile.%d{yyyy-MM-dd}T%d{HH_mm,aux}.log </fileNamePattern> </rollingPolicy </appender> See also the docs at [1] in particular the 'aux' parameter for fileNamePattern. I hope this helps, -- Ceki http://twitter.com/#!/ceki [1] http://logback.qos.ch/manual/appenders.html#TimeBasedRollingPolicy On 05.07.2012 22:10, J.V. wrote:

I want to set 'append=false' but have each log file created have a timestamp of the creation in the name so as to not overwrite previous log files.

How is this accomplished (if possible at all)?

thanks

J.V.