#!/bin/bash
#remaster lib
[ -d "<LIBDIR>" ] || { echo "LIBDIR not exist"; exit 1; }

#check_url [URL]
function check_url() {
    URL="$1"
    if [[ `wget -S --spider "$URL"  2>&1 | grep 'HTTP/1.1 200 OK'` ]]; then
      echo "true"
      return 0
    else
      echo "false"
      return 1
    fi
}

#this func is standalone executable
[ -n "$1" ] && {
    check_url $@
}