Use 'emcmd' that POSTs to /update endpoint.

plugins/dynamix/scripts/emcmd

@@ -0,0 +1,14 @@
+#!/usr/bin/php
+<?PHP
+require_once "/usr/local/emhttp/webGui/include/publish.php";
+function emhttp_command($cmd)
+{
+    $var = parse_ini_file("/var/local/emhttp/var.ini");
+    $cmd .= "&csrf_token={$var['csrf_token']}";
+    return curl_socket("/var/run/emhttpd.socket", "http://localhost/update", $cmd);
+}
+$result = emhttp_command($argv[1]);
+if ($result === "") exit(0);
+echo "$result".PHP_EOL;
+exit(1);
+?>

plugins/dynamix/scripts/emhttpd_update

@@ -1,18 +0,0 @@
-#!/usr/bin/php -q
-<?PHP
-/* Copyright 2005-2018, Lime Technology
- * Copyright 2012-2018, Bergware International.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version 2,
- * as published by the Free Software Foundation.
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- */
-?>
-<?
-$docroot = $docroot ?? $_SERVER['DOCUMENT_ROOT'] ?: '/usr/local/emhttp';
-require_once "$docroot/webGui/include/publish.php";
-curl_socket("/var/run/emhttpd.socket", "http://localhost/status.htm");
-?>