It is worth noteting that the shred program mentioned is more or less useless on modern filesystems for a variety of reasons, the man-page has a list that it wi

It is worth noteting that the shred program mentioned is more or less useless on modern filesystems for a variety of reasons, the man-page has a list that it will fail to work correctly on (btrfs, ext3, NFS). It may well be that the only usable filesystem for it, is FAT32 (and possibly NTFS, not sure on that thou).