The Ramlog project lets you keep your system logs in RAM while your machine is running and copies them to disk when you shut down. If you are running a laptop or mobile device with syslog enabled, Ramlog might help you increase your battery life or the life of the flash drive on your mobile device. As a side effect of using Ramlog, you will be less likely to be caught out by a daemon that suddenly starts sending a message to syslog every 30 seconds and saps your battery keeping the hard disk spinning.

Ben Martin Wrote a How-to in using this great opensource project. Read his article.