## nano /root/check_eth.sh && chmod +x /root/check_eth.sh

#!/bin/bash

INTERFACE="eth0"
TIMEOUT=300 # 5 minutes en secondes

if ! ifconfig $INTERFACE | grep -q "inet " ; then
    echo "Ethernet down, checking for $((TIMEOUT/60)) minutes..."
    sleep $TIMEOUT
    if ! ifconfig $INTERFACE | grep -q "inet " ; then
        echo "Ethernet still down, shutting down..."
        shutdown -h now
    fi
fi