Running system command from php

[proggybilly]

I am trying to put together a page that displays different information about the system. One of the commands I want to run is hdparm so that I can gather the hard drive serial number. My code looks like this:

$hd = system("hdparm -I /dev/sda");
echo $hd;

But I get nothing when I pull up the page to display.

Any help is greatly appreciated

 

[jpadie]

ok. I assume that you have edited sudoers with visudo?

and that the edit was made using sudo as root?

I think that the correct line in sudoers should be as I posted (save for the change in user name)

asterisk    ALL[red]=(ALL)[/red] NOPASSWD: /usr/bin/php -f /var/[URL unfurl="true"]www/html/ivrconfig/pwd.php[/URL]

I notice aswell that you are looking at getting hdparm for /dev/[red]sda[/red] my code is querying for /dev/[red]hda[/red]. if you are sure of your device name, then you should change my code accordingly.

 

[proggybilly]

Ok, making some progress I think. I still get

Array
(
)

If I run on the command line as root, php test.php, it displays the array accordingly.

If I su asterisk and run php test.php, i get:
HDIO_DRIVE_CMD(identify) failed: Permission denied
<pre>Array
(
[0] =>
[1] => /dev/sda:
)

So making progress for sure. At least I know your scripts work as root. Now to get it working accordingly as asterisk.

 

[proggybilly]

Correction, I changed my hdparm -I to hdparm -i and now it works! Thank you so very much!

 

[proggybilly]

Ok so I copy my files from the development server to the production server. i add the sudoers line accordingly. If I rung on command line, the hdparm stuff works, however it will not display in the brower.. Sheesh.... If it's not one thing.

 

[jpadie]

Then I suspect your server is not running as asterisk. try calling phpinfo to check the user perms

 

[proggybilly]

Oh it was running asterisk. For some reason, I had to do a service httpd restart and that fixed it.