# Use it like
# wipe-drive-quick <device-path>
# wipe-drive-quick /dev/sda1
wipe-drive-quick(){

  # This is the device that will be zeroed
  device_path="$1"
  block_size=512

  # 512 * 2048 = 1048576 bytes = 1.05 MB
  # This will wipe 1MB
  # how_much_to_wipe=2048
  # 512 * (2048 * 10) = 512 * 20480 = 10.4 MB
  # This will wipe 10MB
  how_much_to_wipe=20480

  # If path is a block device or a file then
  if [[ -b "$device_path" || -f "$device_path" ]]; then

    # Getting the size of the device in the number of sectors
    # Total size of the device in bytes is is $divice_size * $block_size
    device_size="`blockdev --getsz $device_path`"
    seek_amount="$((device_size - how_much_to_wipe))"

    echo -e "\n"
    echo "The device to be wiped is:"
    echo   "$device_path"
    echo   "`lsblk -pf | grep $device_path`"

    echo -e "\n"
    echo "Will run the following command to wipe the first part of the device:"
    echo sudo dd bs="$block_size" if=/dev/zero of="$device_path" count="$how_much_to_wipe"
    echo -e "\n"

    echo "Will run the following command to wipe the last part of the device:"
    echo sudo dd bs="$block_size" if=/dev/zero of="$device_path" count=$how_much_to_wipe seek="$seek_amount"
    echo -e "\n"

    echo "Please check the commands above and make sure that this is what you want to do."
    echo -e "Choosing continue will execute them.\n"

    # Uncomment this if you use BASH and comment if you don't
    read -r -p "Continue (y/N)?" choice
    # Comment this if you use BASH, and uncomment if you use ZSH
    # read "choice?Continue (y/N)?"

    if [[ "$choice" =~ ^(Y|y) ]]; then
      echo -e "\n"
      echo "Wiping first part of the device:"
      sudo dd bs="$block_size" if=/dev/zero of="$device_path" count=$how_much_to_wipe
      echo -e "\n"
      echo "Wiping last part of the device:"
      sudo dd bs="$block_size" if=/dev/zero of="$device_path" count=$how_much_to_wipe seek="$seek_amount"
    else
      echo "Not executing commands, because you chose 'No'."
    fi
  else
    echo "The path \`$device_path\` is not a block device or a file."
  fi
}