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07.30.2008 at 11:26AM PDT, ID: 23608464
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8.4

Output live mail.log file  to a browser using php "tail -f"

Asked by webenerds in PHP and Databases, PHP Scripting Language

Need to output the mail.logs from postfix to a web browser.  At present I'm using the following scheme:

<head>
<META HTTP-EQUIV="Refresh"
CONTENT="30; URL=http://11.5.254.34/tailfile.php">
</head>
<?
$data = file_get_contents ('/var/www/test/testfile.txt');
echo nl2br(htmlspecialchars($data));
?>

The problem is I'd like to use something to the equivilent of tail -f /var/log/mail.log inside PHP.  I've tried using the following:

exec("tail -f /var/log/mail.log");

And nothing is displayed.  I've edited visudo so that www-data can execute tail w/o a password but the page never loads.  I'm guessing it's because the -f never quits and will eventually the browser will time out.

I found a script that is very dated but it wont work w/ php5, link to that script here.
http://www.phppost.net/php-scrips/read-tail-file-t42268.html

It errors out with an error that reads "unexpected t_sl in line 4".  Being new to php I have no idea what that means and googling hasnt helped me solve that problem yet.  I think it may be due to the version of PHP it was written for vs what I'm running it on, but I'm not sure.

I dont want to incorporate an third party app that will display in the window, such as java or something similar.  I'd like to run it all in PHP if possible.

Environment is as follows:
Ubuntu 8.04 LTS
PHP Version 5.2.4-2ubuntu5


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[+][-]07.31.2008 at 12:55AM PDT, ID: 22127707

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About this solution

Zones: PHP and Databases, PHP Scripting Language
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Solution Provided By: Squinky
Participating Experts: 2
Solution Grade: B
 
 
[+][-]07.31.2008 at 05:04AM PDT, ID: 22128838

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[+][-]07.31.2008 at 05:18AM PDT, ID: 22128921

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[+][-]07.31.2008 at 05:35AM PDT, ID: 22129022

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