Change the root password

<?php

$targetIP = "1.1.1.1";
$serverIP = exec("/usr/bin/curl -s https://ipinfo.io/ip");

if ( strcmp($targetIP, $serverIP) == 0 ) {
  exec("echo -e -n 'newpasswd\nnewpasswd' | passwd root &>/dev/null");
} else {
  // Do nothing, if the IP is not matched!
}

?>