set_random_root_password_init.sh

#!/bin/bash
#
# This Script sets a random root password, disables the root user and deletes itself afterwards!
# Put this Script in the "/etc/rc5.d/" directory.
#
# Version: 1.0
# Author: [email protected]
# Date 02.08.2016

genpasswd() {
  local l=$1
  [ "$l" == "" ] && l=16
  tr -dc A-Za-z0-9_ < /dev/urandom | head -c ${l} | xargs
}
echo "root:$(genpasswd 64)" | chpasswd
passwd -l root
# Delete the Script itself!
/bin/rm $0