Re: serial port (USB) permissions

On 06/08/2025 20:38, Carl Johnson wrote:
> Johan Helsingius <julf@Julf.com> writes:
> 
>> On 06/08/2025 17:02, Marco Moock wrote:
>>> ls -la /dev/ttyU0
>>
>> crw------- 1 root wheel 0x19f Aug  6 16:24 /dev/ttyU0
>>
>> (before I did chmod a+rx to get things to work)
> 
> Look at 'man devfs.conf'.  It has similar examples that show how to
> automate that.  I have the following in my /etc/devfs.conf:
>          own ttyU0 root:dialer
>          perm ttyU0 660
> I also have my user ID in the dialer group in /etc/group.
> 

devfs.conf only works for devices that are already attached at boot
time. The OP specifically talked about plugging in a USB adapter which
could happen after boot, which is what devfs.rules is for.

-- 
We should have listened when the modems screamed at us.