At Wed, 22 May 2019 23:16:22 -0700 (PDT) [email protected] wrote:
>
>
>
> Thanks to all of the answers.
> Yes I have to work on the GPIOs, but I'm a newbie on linux and beaglebone,
> could you explain me how to do join GPIO group?
> Thank you.
>
You use the command line tool "usermod" (don't forget the '-a'!!):
sudo usermod -a -G gpio username
The various groups you might want to add:
gpio -- this is the group for accessing GPIO lines (/sys/class/gpio/ and
/sys/class/pwm/)
i2c -- this is the group for acccessing i2c devices (/dev/i2c-*)
spi -- this is the group for accessing SPI devices (/dev/spidev*)
dialout -- this is the group for accessing tty devices (/dev/tty*)
> Il giorno giovedì 23 maggio 2019 07:37:58 UTC+2, Robert Heller ha scritto:
> >
> > At Thu, 23 May 2019 00:58:44 -0400 [email protected] <javascript:>
> > wrote:
> >
> > >
> > > On Wed, 22 May 2019 14:11:39 -0700 (PDT), "Mark A. Yoder"
> > > <[email protected] <javascript:>> declaimed the
> > > following:
> > >
> > > >If you run
> > > >
> > > >*sudo visudo*
> > > >
> > > >The add the following to the end.
> > > >
> > > >debian ALL=(ALL) NOPASSWD: /path/to/command/to/start.sh
> > > >
> > > >
> > > >you can use *sudo* without giving a password. I think then your
> > ExecStart
> > > >can be
> > > >
> > > >ExecStart=sudo /usr/bin/scriptname.s
> > > >
> > >
> > > Why does all this seem to be a potential security leak? <G>
> > >
> > > What is wrong with adding an entry in root's crontab using the
> > @reboot
> > > specification for when to run the job?
> > >
> > > A Raspberry-Pi example, but should carry over to Beaglebone just
> > as
> > > well.
> > >
> > https://www.raspberrypi-spy.co.uk/2013/07/running-a-python-script-at-boot-using-cron/
> >
> >
> > It also begs the question: why is root access needed, *exactly*. If you
> > are
> > using GPIO, you just need to be in the GPIO group.
> >
> >
> > --
> > Robert Heller -- 978-544-6933
> > Deepwoods Software -- Custom Software Services
> > http://www.deepsoft.com/ -- Linux Administration Services
> > [email protected] <javascript:> -- Webhosting Services
> >
> >
>
--
Robert Heller -- 978-544-6933
Deepwoods Software -- Custom Software Services
http://www.deepsoft.com/ -- Linux Administration Services
[email protected] -- Webhosting Services
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups
"BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/beagleboard/20190523130106.21A8526C0010%40sharky3.deepsoft.com.
For more options, visit https://groups.google.com/d/optout.
