Solved

Pass command directly to OS

Posted on 2006-11-28
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Last Modified: 2008-01-09
Hi...

I want to pass a command direct to the terminal.  In particular this command:

     cat /proc/cpuinfo | grep 'model name' | sed -e 's/.*: //'

and then have it displayed nice and neatly on the page.  

Currently my code looks like this:
    $cmd = "cat /proc/cpuinfo | grep 'model name' | sed -e 's/.*: //' ";
    shell_exec($cmd);

But instead of running I get an error telling me:
    Warning: shell_exec() [function.shell-exec]: Cannot execute using backquotes in Safe Mode in /var/www/web3/web/network.php on line 4

Does anyone know a way for me to get command to run? I've also tried to echo exec() and popen(), but exec gave me no errors and no output... whilst popen gave me the cryptic output "Resource id #2".

Thanks in advance.
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Question by:Mr_Lenehan
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7 Comments
 
LVL 29

Expert Comment

by:TeRReF
ID: 18030491
PHP runs in safe_mode. This means that there's only 1 dir that's enabled to run programs from.
Look for that dir with this command:
phpinfo();

(put it in a seperate file and run it...)
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Author Comment

by:Mr_Lenehan
ID: 18030548
Ran phpinfo and found the following:

Directive                       Local             Master
safe_mode                   On                     Off
safe_mode_exec_dir      no value      no value

I take it the safe mode options are configured in php.ini?
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Accepted Solution

by:
TeRReF earned 500 total points
ID: 18030560
Yes, that's right.
The directives are already there, find them and uncomment/ define them...
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LVL 2

Author Comment

by:Mr_Lenehan
ID: 18030567
Okay, answered that bit myself. How do I restart php on unix?
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LVL 29

Expert Comment

by:TeRReF
ID: 18030695
You restart Apache, become root and type this command:
apachectl stop && apachectl start
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Author Comment

by:Mr_Lenehan
ID: 18030710
cheers
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Expert Comment

by:TeRReF
ID: 18030716
You're welcome :)
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