[chirp_users] CHMOD ...

Angus Ainslie angus at akkea.ca
Mon Jun 8 08:52:59 PDT 2020


You could create a udev rule that will set the permissions and/or group 
each time the device is plugged in.

https://askubuntu.com/questions/15570/configure-udev-to-change-permissions-on-usb-hid-device

On 2020-06-08 08:44, Pat Anderson wrote:
> You are right that the device recreates itself every time it is
> plugged in and the chmod is not persistent. However, I am a member of
> the dialout group, and that does not give me the required permission
> to access the /dev/ttyUSB0 device. I don't know why. So far, only the
> chmod "trick" if you will works, and it is not difficult.
> 
> On Mon, Jun 8, 2020 at 12:59 AM W Paul Mills <ac0hy at wpmills.com>
> wrote:
> 
>> While this will work, it is not really the right way to do it. It is
>> 
>> also temporary. These devices recreate themselves every boot, or
>> every
>> time you reinsert a device.
>> 
>> The right way is "sudo adduser user dialout" Substitue your user
>> name
>> for "user." On some systems the group may be different.
>> 
>> Example:
>> 
>> wpmills at suzanne1:~$ ls -l /dev/ttyUSB*
>> crw-rw----+ 1 root dialout 188, 0 Jun  7 18:53 /dev/ttyUSB0
>> crw-rw----+ 1 root dialout 188, 1 Jun  8 02:49 /dev/ttyUSB1
>> wpmills at suzanne1:~$
>> 
>> wpmills at suzanne1:~$ sudo adduser wpmills dialout
>> [sudo] password for wpmills:
>> The user `wpmills' is already a member of `dialout'.
>> wpmills at suzanne1:~$
>> 
>> On 6/7/20 7:14 PM, Peter via chirp_users wrote:
>>> Hi all:
>>> 
>>> I am not sure who came up with the brilliant tip of chmod 777
>>> /dev/ttyUSB0 as I have deleted the email suggesting that.
>>> 
>>> So THANK YOU for that suggestion. I was getting frustrated trying
>> to get
>>> Chirp on Linux Mint 19.2 to up/download from my new (to me) Icom
>> 2100H.
>>> All I got was error messages that the radio had responded
>>> inappropriately. Until I did the chmod thing. IT WORKED.
>>> 
>>> So, thanks again. Now I can get going on the next step of a very
>> long march.
>>> 
>>> Peter, VE3BBN
>>> 
>> 
>> --
>> /**************************************************
>> * Amateur Radio Station AC0HY                     *
>> * W. Paul Mills         SN807                     *
>> * Assistant EC Alpha-1 ARES Shawnee/Wabaunsee, KS *
>> * President Kaw Valley Amateur Radio Club         *
>> **************************************************/
>> 
>> _______________________________________________
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>> This message was sent to Pat Anderson at anderson5420 at gmail.com
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