icingaweb2/modules/monitoring/application/views/scripts/show/components/command.phtml

<?php

$parts = explode('!', $object->check_command);
$command = array_shift($parts);

?><tr>
  <th><?= $this->translate('Command') ?></th>
  <td><?= $this->escape($command) ?>
</tr>
<?php

$row = "<tr>\n  <th>%s</th>\n  <td>%s</td>\n</tr>\n";
for ($i = 0; $i < count($parts); $i++) {
    printf($row, '$ARG' . ($i + 1) . '$', $this->escape($parts[$i]));
}