ipToBin.sh

#!/usr/bin/bash
# Convert IPv4 to bin

if [ $# != 1 ]; then
  echo -e "\n [!] This script needs an IPv4 address";
  echo
  exit 0
fi

blue_color=$(printf '\033[34m')
red_color=$(printf '\033[31m')
reset_color=$(printf '\033[m')
return_value=""
max=255
min=0
ipv4="${1}"

function start_banner(){
cat <<End-of-banner 
${blue_color}
 ========================================================================
                              ${red_color}IPv4 to dec${blue_color}
 ========================================================================
${reset_color}
End-of-banner
}

function stop_banner(){
cat <<End-of-banner
${blue_color}
 ========================================================================
                                    rnek0 from https://web.lunarviews.net
${reset_color}
End-of-banner
exit 0
}

function check_ip(){
  valid_ip=$(echo ${ipv4} | grep -E '^[[:digit:]]{1,3}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}$');
  if [ ! -n "$valid_ip" ]; then
    echo -e "\n ${red_color}[!]${reset_color} This IPv4 address ( ${ipv4} ) isn't valid. \n ... Please check it and try again.";
    echo
    stop_banner
  fi
}

function convert_to_dec(){
  IFS='.' read -a array <<< "${1}"

  for numByte in "${array[@]}"; do
      if [ ${numByte} -ge ${min} ] && [ ${numByte} -le ${max} ]; then
        return_value=${return_value}"$(echo "obase=2; ${numByte}" | bc | numfmt --format=%08f)."
      else
        echo -e "\n ${red_color}[!]${reset_color} Decimal bytes are between values 0 and 255 \n ... Check your IPv4 address: ( ${1} )"
        echo
        stop_banner
      fi
  done
  return_value="${return_value:0:-1}"

  echo -e "\n [+] IPv4 address : ${ipv4}"
  echo -e "     Binary value : ${blue_color}${return_value}${reset_color}\n"
}

start_banner
check_ip
convert_to_dec "${ipv4}"
stop_banner

exit 0