Re: [PHP] exec and system do not work

On 08/26/2013 03:28 PM, Jim Giner wrote:
> On 8/26/2013 2:41 PM, Ethan Rosenberg wrote:
>>
>> 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
>>
>>
>>
>>
>>
> Ethan - YOU'RE DOING IT AGAIN!!!
>
> Either you are not using error checking AGAIN!!
> OR
> You are showing us re-typed in code that YOU DIDN"T ACTUALLY RUN.
>
> I've told you multiple times that you need to do these two things and
> you are back at it again.
>
> The sample php above has plain simple syntax errors that would keep it
> from running, which error checking would tell you IF YOU RAN IT.
>

Jim -

Thank you.

I don't totally understand your reply ...

but I will try to answer....

The code is taken from an operating program.  My error checking is set 
to maximum sensitivity.

If you would point out my syntax errors, I will fix them.

TIA

Ethan