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<H1>[Mageia-discuss] Making the serial port available to all</H1>
<B>Renaud (Ron) Olgiati</B>
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TITLE="[Mageia-discuss] Making the serial port available to all">renaud at olgiati-in-paraguay.org
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<I>Mon Sep 17 13:48:46 CEST 2012</I>
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<PRE>On Monday 17 Sep 2012 03:08 my mailbox was graced by a message from Alejandro
López who wrote:
><i> > I have a problem, in that whenever I want to use the USB Serial port at
</I>><i> > /dev/ttyUSB0 I have to log in as root.
</I>><i> > I wonder if the way to solve this is by adding a rule
</I>><i> > /dev/ttyUSB0 root root 777 in Mcc > Security > Settings > Permissions or
</I>><i> > is there another way ?
</I>><i> > I have tried to change the permissions in /dev but they always revert to
</I>><i> > 660 after a time.
</I>
><i> The devices in dev are recreated with each boot. This explains why they
</I>><i> loose the permissions. udevd is responsible for creating them at boot time,
</I>><i> following some rules. You need to modify those rules. If I remember
</I>><i> correctly, they are located in /etc/udev/rules.d/.
</I>
I think I finally found a simpler solution:
/dev/ttyUSB0 (like all the /dev/ttyS*) belongs to the group dialout.
So I just added my user to that group ("usermod -a -G dialout user" as root)
and logged in again.
And I can now download my GPS data as user !
Cheers,
Ron.
--
I'll defend to the death your right to say that,
but I never said I'd listen to it!
-- Tom Galloway with apologies to Voltaire
-- <A HREF="http://www.olgiati-in-paraguay.org">http://www.olgiati-in-paraguay.org</A> --
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