Add OS check looking for SME server

include/my_functions.php

@@ -238,4 +238,15 @@ function my_file_get_contents($f) {
 	return implode('', file($f));
 }
 
+function getOSInformation() {
+    if (false == function_exists("shell_exec")) {
+        return null;
+    }
+    $os = shell_exec('cat /etc/redhat-release');
+    if (preg_match('/^SME Server/', $os)) {
+        return true;
+    } else {
+        return null;
+    }
+}
 ?>