ヤマザキです。
安直な解決方法ですが
>> $command_result = system("ps -axu | grep command_name");
>$tmpfile = tempnam("/tmp", "psaxu");
$command_result = system("ps -axu | grep command_name > $tmpfile");
とか。
--
ヤマザキ
Wildcard Project.
email: yamazaki@wildcard.mine.nu
HP: http://wildcard.mine.nu/