East-tec Eraser or what?

[Harvey]

Fellow Geekers,
A co-worker of mine is planning on setting up a linux box for security. He asked me of all people,is there a way or software that he could use to permanently delete the information on his linux log files. The only thing that comes to mind is East-tec eraser but I do not know if it can be used on the linux platform. Is there something out there that can be used on the linux platform that not even hardware recovery tools can recover? Can I please get some help on this one? I do not know what to tell him.

Many thanks,
Harvey