Script to automatically restart a system if there's a problem in connecting to the internet

auto_restart.sh

#!/bin/bash

HOSTNAME=1.1.1.1
TIMEOUT=150
TEST_INTERVAL=60

ping_host() {
    ping -c1 "$HOSTNAME" &> /dev/null
}

reboot_on_timeout() {
    local start_time=$(date +%s)
    local attempt_count=0
    until ping_host
    do
        local end_time=$(date +%s)
        DIFF=$(( $end_time - $start_time ))
        if [ "$DIFF" -gt "$TIMEOUT" ]
        then
            echo "Rebooting..."
            reboot
            break
        fi
        (( ++attempt_count ))
        echo "Retrying $attempt_count/$TIMEOUT time(s)"
        sleep 1
    done
    echo "Reacquired connection to host!"
}

while true
do
    ping_host 2>&1 > /dev/null
    if [ "$?" -ne 0 ]
    then
        echo "Could not connect to host... Starting reboot countdown"
        reboot_on_timeout
    fi
    echo "Could connect to host"
    sleep "$TEST_INTERVAL"
done