Your command is correct when adding a new user and assigning them to the dialout group as their primary group.
(and may work to add that user to a new group as well but I have never tried that)

The command on the page noted is correct for adding a user to a group when that user already exists. 
Look at the man page for usermod and see what it says.

--------------------------------
NAME
       usermod - modify a user account

SYNOPSIS
       usermod [options] LOGIN

DESCRIPTION
       The usermod command modifies the system account files.

OPTIONS
       The options which apply to the usermod command are:

       -a, --append
           Add the user to the supplementary group(s). Use only with the -G option.

      -G, --groups GROUP1[,GROUP2,...[,GROUPN]]]
           A list of supplementary groups which the user is also a member of. Each group is separated from the next by a comma, with no
           intervening whitespace. The groups must exist.

           If the user is currently a member of a group which is not listed, the user will be removed from the group. This behaviour can
           be changed via the -a option, which appends the user to the current supplementary group list.
-----------




Jeff
KI7GJG



On Sat, Mar 18, 2023 at 2:27 PM Dave B via chirp_users <chirp_users@intrepid.danplanet.com> wrote:
FYI.

The info at :-
https://chirp.danplanet.com/projects/chirp/wiki/ChirpOnLinux

Is in error regarding adding a user to a group on Debian based systems.

The example terminal command under "Serial port permissions" should be....

$ sudo adduser $USER dialout

Note:  Just $USER and no quotes!   The system of couse, will ask for the users password.

And then as said, Logout and Log back in again for it to take effect.

This has been checked on Linux Mint, a derivative of Ubuntu, from Debian of course.

73.
    Dave G8KBV.




On 18/03/2023 19:00, chirp_users-request@intrepid.danplanet.com wrote:
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Today's Topics:

   1. Chirp On Puppy Linux (John KB2SCS)
   2. Re: Chirp On Puppy Linux (Jim Unroe)
   3. Re: Chirp On Puppy Linux (Jeffrey Vian)


----------------------------------------------------------------------

Message: 1
Date: Fri, 17 Mar 2023 17:04:33 -0400
From: John KB2SCS <kb2scsjb@gmail.com>
Subject: [chirp_users] Chirp On Puppy Linux
To: Chirp <chirp_users@intrepid.danplanet.com>
Message-ID:
	<CAHBPgZGTs-6gr6yoSzeftMoKji6=449b69WkuVGh2sRvrnoaWA@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi All
         To run the python 2 version of chirp I would download the .tar.gz
file and extract it to a directory.
I would then open a terminal window in that directory. Then run Chirp with
the following command
Python Chirpw.py

I am trying to run the python 3 version of chirp using the same method.
My first problem is there is not any chirps.py file to run so I have no
idea which file is the one I should run.

My question is how do I run the latest version of chirp running the source
code?

Thank you all for your time in reading this email.

Best regards
John
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Message: 2
Date: Fri, 17 Mar 2023 17:43:10 -0400
From: Jim Unroe <rock.unroe@gmail.com>
Subject: Re: [chirp_users] Chirp On Puppy Linux
To: Discussion of CHIRP <chirp_users@intrepid.danplanet.com>
Message-ID:
	<CADnO8U7TrTD7OdmcaY8tSLcuECrhncx9A34VBi5hnFB80gWx_A@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"

On Fri, Mar 17, 2023 at 5:06?PM John KB2SCS <kb2scsjb@gmail.com> wrote:

Hi All
         To run the python 2 version of chirp I would download the .tar.gz file and extract it to a directory.
I would then open a terminal window in that directory. Then run Chirp with the following command
Python Chirpw.py

I am trying to run the python 3 version of chirp using the same method.
My first problem is there is not any chirps.py file to run so I have no idea which file is the one I should run.

My question is how do I run the latest version of chirp running the source code?

Thank you all for your time in reading this email.

Best regards
John

Have you looked at the "Running CHIRP on Linux" wiki page? I believe
it will answer some of your questions.
https://chirp.danplanet.com/projects/chirp/wiki/ChirpOnLinux

Jim KC9HI


------------------------------

Message: 3
Date: Fri, 17 Mar 2023 20:51:30 -0500
From: Jeffrey Vian <sandhillsinvestment@gmail.com>
Subject: Re: [chirp_users] Chirp On Puppy Linux
To: Discussion of CHIRP <chirp_users@intrepid.danplanet.com>
Message-ID:
	<CA+hWPZe5jrDBN01OZL==0ThYpUe4+0mbm+KgS5NeFyBeZQeyLg@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

You install and run it differently since chirp-next is actually a python3
build.

I installed python3-pip, then as my user I installed chirp-next as my
regular user using pip.
Will need to check my notes and verify the steps on  a new clean install of
Fedora 37 and Chirp-next.  (you did not note the OS you are running, but I
assume it is linux.)

However, if you install it with pip as a regular user it is installed under
/home/USER/.local/ and the executable is ~/.local/bin/chirp.
You will need to install (using pip) the wheel and wxpython and attrdict3
packages, but I don't remember what all else is required.  This is why I
need to repeat the clean install and verify my notes.

It runs in a venv if installed in that manner so nothing else is needed to
run it.  Check your $PATH and if it includes ~/.local/bin then the command
'chirp' is all that will be required.

Jeff
KI7GJG



On Fri, Mar 17, 2023 at 4:05?PM John KB2SCS <kb2scsjb@gmail.com> wrote:


Hi All
         To run the python 2 version of chirp I would download the .tar.gz
file and extract it to a directory.
I would then open a terminal window in that directory. Then run Chirp with
the following command
Python Chirpw.py

I am trying to run the python 3 version of chirp using the same method.
My first problem is there is not any chirps.py file to run so I have no
idea which file is the one I should run.

My question is how do I run the latest version of chirp running the source
code?

Thank you all for your time in reading this email.

Best regards
John



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