usr/bin/custom/watchdog

@@ -3,13 +3,16 @@
 # Log file
 log_file="/var/log/watchdog.log"
 
+# Configuration file
+config_file="/etc/watchdog.conf"
+
+# Function to update watchdog configuration
+update_watchdog_config() {
     # Extract watchdog IP addresses
     watchdog=$(sudo cat /var/lib/dhcp/* | grep -a "option watchdog" | tail -1 | \
     awk '{for (i=3; i<=NF; i++) printf "%s ", $i}' | tr -d '";')
-IFS=' ' read -r -a ip_array <<< "$watchdog"
     
-# Configuration file
-config_file="/etc/watchdog.conf"
+    IFS=' ' read -r -a ip_array <<< "$watchdog"
 
     # Backup current configuration
     if sudo cp "$config_file" "$config_file.bak"; then
@@ -27,7 +30,6 @@ echo "interval = 60" | sudo tee -a "$config_file" > /dev/null
 
     if [ ${#ip_array[@]} -eq 0 ]; then
         echo "No IP addresses found. Watchdog configuration cleared." >> "$log_file"
-    sudo systemctl stop watchdog
     else
         for ip in "${ip_array[@]}"; do
             echo "ping = $ip" | sudo tee -a "$config_file" > /dev/null
@@ -41,6 +43,28 @@ if sudo systemctl restart watchdog; then
     else
         echo "Failed to restart watchdog service." >> "$log_file"
     fi
+}
 
-#  Version 1.1:
-#  Created 2024 by Tim Eertmoed @ WiS IT-Solutions GmbH, Germany to work on Raspian as custom pxe init script.
+# Main loop
+start_time=$(date +%s)
+end_time=$((start_time + 300))  # 5 minutes in seconds
+interval=30  # Initial interval of 30 seconds
+
+while true; do
+    update_watchdog_config
+    
+    current_time=$(date +%s)
+    
+    # Check if 5 minutes have passed
+    if [ "$current_time" -ge "$end_time" ]; then
+        echo "5 minutes have passed. Stopping the watchdog service." >> "$log_file"
+        sudo systemctl stop watchdog
+        break  # Exit the loop
+    fi
+    
+    echo "Waiting for $interval seconds before checking for IP addresses again..." >> "$log_file"
+    sleep $interval
+done
+
+# Version 1.4:
+# Created 2024 by Tim Eertmoed @ WiS IT-Solutions GmbH, Germany to work on Raspian as custom PXE init script.