#!/bin/bash

start_ip="10.10.43.100"
end_ip="10.10.43.110"

echo "마지막 수행 시간 : $(date +%Y-%m-%d-%r)<br>" > README.md
echo "|주소&nbsp&nbsp&nbsp&nbsp&nbsp|사용 여부&nbsp&nbsp&nbsp&nbsp&nbsp|" >> README.md
echo "|------|------|" >> README.md

for ((i=${start_ip##*.}; i<=${end_ip##*.}; i++)); do
    ip="${start_ip%.*}.${i}"
    if ping -c 1 -W 1 "$ip" >/dev/null 2>&1; then
        echo "|$ip|<span style=\"color:red\">사용중</span>|" >> README.md
    else
        echo "|$ip|<span style=\"color:green\">사용가능</span>|" >> README.md
    fi
    echo "${i} 체크 완료"
done