Check Website Uptime and HTTP Status

#!/bin/bash

# Usage: check_url_status.sh <URL>
# Example: check_url_status.sh https://www.example.com

if [ -z "$1" ]; then
    echo "Usage: $0 <URL>"
    echo "Example: $0 https://api.myservice.com/health"
    exit 1
fi

URL="$1"

echo "Checking URL: $URL"

# Use curl to get HTTP status code and response time
# -s: Silent mode
# -o /dev/null: Discard output (body)
# -w: Format output (http_code, time_total)

RESPONSE=$(curl -s -o /dev/null -w '%{http_code}:%{time_total}
' "$URL")

HTTP_STATUS=$(echo "$RESPONSE" | cut -d':' -f1)
RESPONSE_TIME=$(echo "$RESPONSE" | cut -d':' -f2)

if [ "$HTTP_STATUS" -eq 200 ]; then
    echo "Status: OK (HTTP $HTTP_STATUS)"
    echo "Response Time: ${RESPONSE_TIME}s"
    exit 0
elif [ "$HTTP_STATUS" -eq 000 ]; then
    echo "Status: FAILED (Could not connect or resolve host)"
    echo "Response Time: ${RESPONSE_TIME}s"
    exit 1
else
    echo "Status: FAILED (HTTP $HTTP_STATUS)"
    echo "Response Time: ${RESPONSE_TIME}s"
    exit 1
fi