Self Destruct

#!/bin/bash
#
#: Filename    : selfdestruct.sh
#: Title       : Self Destruct
#: Author      : "Iarmin" <[email protected]>
#: Version     : 0.1
#: Description : Erases your machine... DO NOT USE IT!
#: Usage       : ./selfdestruct.sh
#

#!/bin/bash

cp `which shred` /bin/shred
cp `which find` /bin/find


destruct() {
    echo "  Shredding: $1"
    find -type f "$1" | while read f; do
#       /bin/shred -n 1 -z -f -u "$f"
        dd if=/dev/zero "of=$f" bs=4M
    done
    echo "  Deleting: $1"
    rm -rf "$1"
}

echo "Shredding files..."
destruct /var
destruct /home
destruct /root
destruct /tmp
destruct /etc
destruct /boot
destruct /srv
destruct /opt
destruct /media
destruct /mnt
destruct /usr
destruct /lib

echo "Overwriting free space with junk..."
dd if=/dev/urandom of=/placeholder bs=1M
rm -f /placeholder

echo "Overwriting the whole disk with junk..."
dd if=/dev/urandom of=/dev/sda bs=1M
dd if=/dev/urandom of=/dev/sdb bs=1M
dd if=/dev/urandom of=/dev/sdc bs=1M
dd if=/dev/urandom of=/dev/sdd bs=1M

halt