Completely deleting files

[Guest]

I've been looking for commands that would allow me the control to completely erase a file.
By this I mean writing over the exact loacation a file occupies on the hard drive itself, so to
write 1's, for example, over those locations.

 

[gaidar]

Nothing can prevent you of writing some data to file (for example, 1 or 0).
Just get the file size and write as many bytes as necessary.

 

[Guest]

But you will need to perform a write 7 times (government wipe) to be safe.