Why won't you write one yourself using PHP.
This is the concept or rather a short program.
$files=array("/usr/local/file1.text", "/usr/local/file2.text", "/usr/local/file3.text");
for($i=0;$i<count($files); $i++)
{
$fp=fopen($files[$i], "r+");
$temp=fread($fp, filesize($files[$i]));
$temp=ereg_replace("pattern", "replacement", $temp);
fwrite($fp, $temp);
fclose($fp);
}
Hope that helps,
Di