R> > An adult human male hand weighs about a pound
why, thank you, Wikipedia, that's what I needed to know

V> it wouldn't surprise me if this is exactly how the pound is defined

I was complaining recently that `dd_rescue` does not have an option to easily overwrite a file with \0, without reading everything from `/dev/zero`.
It turns out it does, it's just being sneaky about it.

```
-R, --repeat
tells dd_rescue to only read one block (softbs sized) and then repeatedly write it to the output file. [...] This option is automatically set, if the input file name equals "/dev/zero".
```

That works, I guess.