Check response code of URLs using input file

curl-reponse-code-of-urls.sh

#!/bin/bash
input="./urls.txt" # input file for list of URLs
output="./result.txt" # output file
echo "ResponseCode, URL" > $output
while IFS= read -r line
do
    status_code=$(curl --write-out %{http_code} --silent --output /dev/null $line)
    outputStr=$(echo "$status_code, $line")
    echo $outputStr
    echo $outputStr >> $output
done < "$input"