chmod +x ip-report.sh ./ip-report.sh You can even pipe it to a log file for daily audits. This Bash script checks your public IP every hour and logs changes. Great for dynamic DNS or security monitoring.
#!/usr/bin/env python3 import ipaddress import subprocess import sys network = ipaddress.ip_network("192.168.1.0/24", strict=False) ip script
Run it to discover active devices on your LAN. A good IP script should be idempotent — running it twice doesn’t break things. Always check before setting an IP: chmod +x ip-report
echo -e "\n=== Neighbors (ARP) ===" ip neigh show "$LOG_FILE" echo "$CURRENT_IP" >
if [ "$CURRENT_IP" != "$LAST_IP" ]; then echo "$(date) - IP changed from $LAST_IP to $CURRENT_IP" >> "$LOG_FILE" echo "$CURRENT_IP" > "$HOME/last_ip.txt" fi
0 * * * * /home/user/check-public-ip.sh For advanced needs (e.g., scanning your whole subnet), Python’s ipaddress module is a lifesaver.