Toolbox - Zerowanie dysków LINUX

#!/bin/bash

LOCATIONS=( "/" "/var" "/home" "/tmp" )
LOCATIONS_RO=( "/usr" )

for LOCATION in ${LOCATIONS[*]}
do
    /usr/bin/dd bs=4096 if=/dev/zero of=${LOCATION}/0 ; rm ${LOCATION}/0
done

for LOCATION in ${LOCATIONS_RO[*]}
do
  /usr/bin/mount ${LOCATION} -o rw,remount && /usr/bin/dd bs=4096 if=/dev/zero of=${LOCATION}/0 ; rm ${LOCATION}/0
  mount ${LOCATION} -o remount
done