Some error I could't fix it

[Anon]

Hi,

I tried some function (system) to load command shell, so I get some error message:

--snip
[Mon Aug 12 14:18:41 2002] [error] PHP Notice: Use of undefined constant pkg_info - assumed 'pkg_info' in /www/htdocs/info-mesin/index.php on line 85
--snip

pkg_info is command shell like:

--snip
<?
system(pkg_info);
?>
--snip

So how to fix this?, or this common error?

Thanks

--
budsz