Reconnect to wifi or ethernet when down

network-monitor.sh

#!/bin/bash

LOGFILE=/var/log/network-monitor.log

if /sbin/ifconfig eth0 | grep -q "inet"; then
    echo "$(date "+%m %d %Y %T") : Ethernet OK"
else
    echo "$(date "+%m %d %Y %T") : Ethernet connection down! Attempting reconnection." >>$LOGFILE
    /sbin/ifconfig eth0 up
    OUT=$?
    if [ $OUT -eq 0 ]; then
        STATE=$(/sbin/ifconfig eth0 | grep "inet")
        echo "$(date "+%m %d %Y %T") : Ethernet network connection reset." >>$LOGFILE
    else
        echo "$(date "+%m %d %Y %T") : Failed to reset ethernet connection" >>$LOGFILE
    fi
fi

if /sbin/ifconfig wlan0 | grep -q "inet"; then
    echo "$(date "+%m %d %Y %T") : Wifi OK"
else
    echo "$(date "+%m %d %Y %T") : Wifi connection down! Attempting reconnection." >>$LOGFILE
    /sbin/ifconfig wlan0 up
    OUT=$?
    if [ $OUT -eq 0 ]; then
        STATE=$(/sbin/ifconfig wlan0 | grep "inet")
        echo "$(date "+%m %d %Y %T") : Wifi network connection reset." >>$LOGFILE
    else
        echo "$(date "+%m %d %Y %T") : Failed to reset wifi connection" >>$LOGFILE
    fi
fi