validate a url with wget

validate.sh

#!/bin/bash

# simple function to check http response code before downloading a remote file
# example usage:
# if `validate_url $url >/dev/null`; then dosomething; else echo "does not exist"; fi




function validate_url(){
  if [[ `wget -S --spider $1  2>&1 |  grep -E '200|320|302|303'` ]]; then 
        echo "URL exist" 
   else
        echo "Error detected. Check URL or internet connection"
        
  fi
  exit
}

if [[ ! -n "$1" ]]; then
   echo "URL missing"
   exit
fi

validate_url "$1"