Thanks Walker. I have looked at setuid and it appears to be the best way to 
go. I don't quite get it though. My code is built by netbeans, so I have to 
chmod +s the exe, then call setuid( x ) in the code? What is x?

On Monday, 2 February 2015 18:57:27 UTC, Walker Archer wrote:
>
> Or you can google the setuid bit.  This would allow your application to 
> run as root without having to be logged in as root.
>
> On Monday, February 2, 2015 at 12:10:31 PM UTC-5, Nic Cyn wrote:
>>
>> You are not really asking the right question (its ok you are new to 
>> this). However the problem you have really has nothing to do with the 
>> Beaglebone Black - it is really a Linux issue and any solution to it would 
>> be common to any Linux system.
>>
>> Try googling something like "*linux auto run program on boot as root*" 
>> and you will find a lot of help.
>>
>> On Monday, 2 February 2015 14:20:41 UTC, Julian Gold wrote:
>>>
>>> We have a  Revision C board running debian, and wish to use a couple of 
>>> the GPIO channels from within the (C++) software we are developing. This 
>>> requires writing to the "file" /sys/class/gpio/export, but this requires 
>>> root permission. In bash I can just "sudo su", but this is surely not going 
>>> to work from C++?
>>>
>>> Presumably if I logged in as root and ran my code, the permissions would 
>>> be correct. However the board boots to the desktop with "debian" as the 
>>> default user. Can this be changed to root and how?
>>>
>>

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