MacOSX was designed on top of the BSD base and took some of the functionality with it. Unfortunately, some of this functionality also meant that maintenance tasks would be during the wee hours of the morning. To alleviate this, MacJanitor allows those that actually turn their machines on and off, to clean up those nasty logs files that grow and don’t get truncated. WIth a click of a button, MacJanitor will help you regain your precious disk space and keep the ship in tip top shape.
Lifehacker < MacJanitor