Wiping free space

Tom C

Is there any command from the CLI that you can use to wipe all of the free space on your hard drive, so the remains of deleted files get removed? If one exists, has anyone had any good/bad experiences with it?

I don't want to reboot into OS 9 to run TechTool Pro every time I delete a file with financial information.
well, if you use 'rm -rf /' it will erase everything on the drive. Don't use this command unless you want EVERYTHING gone. You can view all files in a dir, including hidden files with 'ls -l'.