Re: [PHP] exec and system do not work

On 08/26/2013 11:36 AM, [email protected] wrote:
>
>
>> Tamara Temple <[email protected]> hat am 26. August 2013 um 08:33
>> geschrieben:
>>
>>
>>
>> On Aug 25, 2013, at 10:41 PM, Ethan Rosenberg
>> <[email protected]> wrote:
>>
>>> Dear List -
>>>
>>> I'm lost on this one -
>>>
>>> This works -
>>>
>>> $out = system("ls -l ",$retvals);
>>> printf("%s", $out);
>>>
>>> This does -
>>>
>>> echo exec("ls -l");
>
> Please show the output of the directory listing.
> Please us "ls -la"
>
>>>
>>> This does not -
>>>
>>> if( !file_exists("/var/www/orders.txt"));
>>> {
>>>     $out = system("touch /var/www/orders.txt", $ret);
>
> Maybe you don't have write permissions on the folder?
>
>>>     $out2 = system("chmod 766 /var/www/orders.txt", $ret);
>>>     echo 'file2<br />';
>>>     echo file_exists("/var/www/orders.txt");
>>> }
>>>
>>> and this does not -
>>>
>>> if( !file_exists("/var/www/orders.txt"));
>>> {
>>>     exec("touch /var/www/orders.txt");
>>>     exec("chmod 766 /var/www/orders.txt");
>>>     echo 'file2<br />';
>>>     echo file_exists("/var/www/orders.txt");
>>> }
>>>
>>> Ethan
>>>
>>>
>>
>> When you say "does not work", can you show what is actually not working? I
>> believe the exec and system functions are likely working just fine, but that
>> the commands you've passed to them may not be.
>>
>>
>>
> --
> Marco Behnke
> Dipl. Informatiker (FH), SAE Audio Engineer Diploma
> Zend Certified Engineer PHP 5.3
>
> Tel.: 0174 / 9722336
> e-Mail: [email protected]
>
> Softwaretechnik Behnke
> Heinrich-Heine-Str. 7D
> 21218 Seevetal
>
> http://www.behnke.biz
>

Tamara -

 > Please show the output of the directory listing.
 > Please us "ls -la"

echo exec('ls -la orders.txt');

-rw-rw-rw- 1 ethan ethan 43 Aug 25 23:50 orders.txt


Maybe you don't have write permissions on the folder?

If I perform the touch and chmod from the command line, everything works.


 >> When you say "does not work", can you show what is actually not 
working? I
 >> believe the exec and system functions are likely working just fine, 
but that
 >> the commands you've passed to them may not be.

Here are my commands.

if( !file_exists("/var/www/orders.txt"));
{
echo system("touch /var/www/orders.txt", $ret);
echo system("chmod 766 /var/www/orders.txt", $ret);
echo 'file2<br />';
echo file_exists("/var/www/orders.txt");
}

If I now try a ls from the command line, the return is
  cannot access /var/www/orders.txt: No such file or directory

The ls -la  works because the file was created from the command line.

TIA

Ethan