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Re: problems with exec()

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Am 16.04.2012 00:16, schrieb M. Strobel:
> Am 15.04.2012 19:43, schrieb J.O. Aho:
>> 7segment wrote:
>>> Hi.
>>>
>>> I have an interesting problem and I cannot figure out what the problem
>>> might be.
>>>
>>> This does not  produce any output:
>>>
>>> $response = exec('ifconfig');
>>> echo $response;
>>>
>>> Although when I try other commands, I get a response on the screen. So I
>>> don't get what's so special about ifconfig.
>>>
>>> Could anyone help please?
>>
>> ifconfig usually residence in /sbin (some GNU/Linux distribution are in the migration
>> path of moving it to /usr/sbin), this directory  is never in a normal users or a
>> daemon users $PATH, so you need to give the whole path to this binary to be able to
>> run it.
>>
>> By default the file is executional by all users, but someone may have changed
>> permissions or setup ACL rules with for example SELinux.
>>
> 
> I can tell that on opensuse it it not executable by normal users.
> 

Correct is: on suse it is not found on the path. When called with path /sbin/ifconfig
in a shell it outputs the NIC configuration. When called like that it outputs nothing:

php > $a = exec('/sbin/ifconfig');
php > echo $a;
php > var_dump($a);
string(0) ""


/Str.

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problems with exec() 7segment <7segment@nowhere.com> - 2012-04-15 11:37 -0500
  Re: problems with exec() 7segment <7segment@nowhere.com> - 2012-04-15 11:47 -0500
    Re: problems with exec() Jerry Stuckle <jstucklex@attglobal.net> - 2012-04-15 13:34 -0400
  Re: problems with exec() "J.O. Aho" <user@example.net> - 2012-04-15 19:43 +0200
    Re: problems with exec() "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-04-16 00:16 +0200
      Re: problems with exec() "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-04-16 00:22 +0200
        Re: problems with exec() "J.O. Aho" <user@example.net> - 2012-04-16 07:17 +0200
          Re: problems with exec() Une Bévue <unbewusstsein@fai.invalid> - 2012-04-16 10:07 +0200
            Re: problems with exec() "J.O. Aho" <user@example.net> - 2012-04-16 19:29 +0200
              Re: problems with exec() Une Bévue <unbewusstsein@fai.invalid> - 2012-04-18 15:44 +0200
                Re: problems with exec() "J.O. Aho" <user@example.net> - 2012-04-18 18:02 +0200
                Re: problems with exec() Une Bévue <unbewusstsein@fai.invalid> - 2012-04-18 19:43 +0200
                Re: problems with exec() "J.O. Aho" <user@example.net> - 2012-04-18 20:37 +0200
                Re: problems with exec() Une Bévue <unbewusstsein@fai.invalid> - 2012-04-18 23:31 +0200
  Re: problems with exec() Kim André Akerø <kimandre@nospambetadome.com> - 2012-04-16 13:27 +0200
    Re: problems with exec() "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-04-16 14:43 +0200

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