Bash HttpPing

#!/bin/bash

function pingSite {
    site=$1
    timeInSeconds="$(curl -o /dev/null -s -w %{time_total}\\n $site)"
    timeInMs=$(echo $timeInSeconds | sed -r 's/([0-9]+)\.([0-9]+)/\1\2ms/' | sed -r 's/0*([0-9]+)/\1/')
    echo $timeInMs;
}

function getAndOutputSitePing {
    site=$1
    siteTime=$(pingSite $site)
    printf "$site: $siteTime "
}

baseSite='http://www.google.com'

if [[ -z "$1" ]]; then
    printf "You can specify a site to ping with:\nhttpping http://mysite.com\n\n"
    echo "Defaulting to pinging $baseSite every 1 second"
else
    baseSite=$1
    echo "Pinging $baseSite every 1 second"
fi

printf "Press ctrl+c to cancel\n\n"

echo "Time taken:"

while true; do
    getAndOutputSitePing $baseSite

    printf "\n"
    sleep 1
done