#! /usr/bin/env bash

# for truly not sensitive information, this command wipes all the OS information
for drive in a b c d e f g
do
   wipefs -a /dev/sd$drive
done
# but, to really remove in a way that takes tons of effort to recover, do this also
for drive in a b c
do
   echo Cleaning sd%drive
   dd if=/dev/zero | pv -petrs 580G | dd of=/dev/sd$drive
done