Uses Curl to get the response time for a webpage, also regexes out the page gen time (this last relies on WP Super Cache's "Dynamic page generated in X.XX seconds." HTML comment)

Infinite Response Time Reporter

#!/bin/bash

# My script below is based on this one:
# http://unixbhaskar.wordpress.com/2010/11/12/measure-website-response-time-through-curl/

if [ -z $1 ]
then
	echo "Please pass a URL to measure the response time for, e.g."
	echo "sh infinite_response_time.sh http://google.com/ cookie1=123\;cookie2=abc"
	exit
fi

URL=$1
COOKIE=$2

echo "Did you remember to backslash escape in the cookies param (if you used it)?"
echo ""
echo "Time: to connect / start transfer / total time / page generation"

# An infinite while loop…
while [ 1 ]
do
	# Get the transfer and connection times
	result=`curl --cookie "$COOKIE" -o /dev/null -s -w %{time_connect}:%{time_starttransfer}:%{time_total} $URL`
	STAT1=`echo $result | gawk -F: '{ print $1" / "$2" / "$3}'`

	# Get the page gen time.
	# Comment out this line if you don't want the Super Cache page gen time
	result=`curl --cookie "$COOKIE" -s $URL`
	# Dynamic page generated in 1.103 seconds.
	STAT2=`echo $result | sed "s/.*Dynamic page generated in \(.*\) seconds.*/\1/g"`

	# If you don't have the page gen time, you'll need the next rather
	# than the subsequent line.
	# echo "$STAT1"
	echo "$STAT1 / $STAT2"

	# Gently does it
	sleep 5s
done