Monitor domain status and send updates to telegram

monitor.sh

#!/bin/bash

DOMAIN="targetdomain.com"       # e.g., yahoo.com
BOT_TOKEN="your telegram bot token"
CHAT_ID="your telegram chat id with the bot"
LAST_STATUS_FILE="/tmp/domain_status_$DOMAIN.txt"

# Get WHOIS data
WHOIS_DATA=$(whois $DOMAIN 2>/dev/null)

# Extract first Domain Status
FIRST_STATUS=$(echo "$WHOIS_DATA" | grep -m 1 -i "^Domain Status:" | awk '{print $3}')
# Extract Last update of WHOIS database
LAST_UPDATE=$(echo "$WHOIS_DATA" | grep -i "Last update of WHOIS database" | sed 's/.*: //')

if [ ! -f "$LAST_STATUS_FILE" ]; then
    echo "$FIRST_STATUS" > "$LAST_STATUS_FILE"
    MESSAGE="Initial check:
$DOMAIN
Status: $FIRST_STATUS
Last update: $LAST_UPDATE"
    curl -s -X POST "https://api.telegram.org/bot$BOT_TOKEN/sendMessage" \
        -d chat_id="$CHAT_ID" \
        -d text="$MESSAGE"
    exit 0
fi

LAST_STATUS=$(cat "$LAST_STATUS_FILE")

if [ "$FIRST_STATUS" != "$LAST_STATUS" ]; then
    MESSAGE="🔔 Domain $DOMAIN status changed!
Previous: $LAST_STATUS
Current: $FIRST_STATUS
Last update: $LAST_UPDATE"
    echo "$FIRST_STATUS" > "$LAST_STATUS_FILE"
else
    MESSAGE="✅ Domain $DOMAIN status unchanged: $FIRST_STATUS
Last update: $LAST_UPDATE"
fi

curl -s -X POST "https://api.telegram.org/bot$BOT_TOKEN/sendMessage" \
    -d chat_id="$CHAT_ID" \
    -d text="$MESSAGE"