securely overwrite files with Python

[Skip Montanaro]

    Thomas> A file system that moves around files when you overwrite them,
    Thomas> will only move the data blocks, not the inode.  The inode will
    Thomas> stay the same, and in the same position on the storage device.

Thanks.  It's been years since I looked at any file system structures.  I
was indeed confusing inodes and data blocks.

Skip