Test urls using curl

curl_speedtest.sh

#!/bin/bash
# This script is a very basic curl utility to analyze urls.
# To use it, download the file, make it executable, and run:
# ./curl_speedtest.sh https://www.byte.nl

URL="$1"

if [ "x${URL}" == "x" ] || [[ ! "${URL}" =~ "http" ]] ; then
    echo "Usage: $0 <url>"
    exit 1
fi

curl -L -so /dev/null -w "\n[Info]\n\nStatus Code:\t%{http_code}\nHTTP Version:\t%{http_version}\nRemote IP:\t%{remote_ip}\n\n[Timing]\n\nConnect:\t%{time_connect}\tseconds\nPre-Transfer:\t%{time_pretransfer}\tseconds\nRedirect Time:\t%{time_redirect}\tseconds\nTransfer:\t%{time_starttransfer}\tseconds\nDNS Lookup:\t%{time_namelookup}\tseconds\nTotal Time:\t%{time_total}\tseconds\n\n[Size]\n\nDownload Size:\t%{size_download}\tbytes\nHeader Size:\t%{size_header}\tbytes\nRequest Size:\t%{size_request}\tbytes\n" $URL ; echo