Hi.
On Mon, Aug 20, 2018 at 12:51:24AM -0300, Joao Roscoe wrote:
> Hmmm...
>
> If I create a NIS group (with a high ID), called serial_ports, dhould I
> just, as root, chgrp /dev/ttyS0 so that it's group is serial_ports ?
You could, and it may even work, but it would be temporary.
To make it truly work you should write your own udev rule for these (and
other) devices.
The reason being - udev creates everything under the /dev (system boot).
Udev changes everything under the /dev (vt switch, user relogins).
In that particular case you should override changes made by
/lib/udev/rules.d/50-udev-default.rules.
Reco