"Ping" a website and measure the response times

web-response-times.sh

#!/bin/bash
# Adapted from https://gist.githubusercontent.com/weeyin83/c697468c5986cb3385990fa1c4c2d72b/raw/b8eed6a3259122bce442f2db5c9030f982948a88/websiteresponse.sh

if [ -z "$1" ]; then
    echo "Usage: $0 <URL>"
    exit 1
fi

last_run=0;
while true; do
    last_run=$(date +%s);
    response=$(curl -w 'Return code: %{http_code}; Bytes Received: %{size_download}; Response Time: %{time_total}' "$1" -m 2 -o /dev/null -s)
    return_code=$(echo "$response" | awk -F'; ' '{print $1}' | awk -F': ' '{print $2}')
    bytes_received=$(echo "$response" | awk -F'; ' '{print $2}' | awk -F': ' '{print $2}')
    response_time=$(echo "$response" | awk -F'; ' '{print $3}' | awk -F': ' '{print $2}')
    echo -n -e "\033[0;97m"
    echo -n "$(date --iso-8601=seconds) :: "; 
    if (( $(echo "$response_time > 1" | bc -l) )); then
        echo -n -e "\033[0;91m"
    elif (( $(echo "$response_time > 0.5" | bc -l) )); then
        echo -n -e "\033[0;93m"
    else
        echo -n -e "\033[0;92m"
    fi
    echo -n "Return code: $return_code; Bytes Received: $bytes_received; Response Time: $response_time"
    echo -e "\033[0m"

    while [ $(date +%s) -lt $((last_run + 1)) ]; do
        sleep 0.1;
    done
done