Gene, What I've done in the past to deal with such issues is to add myself to the group "dialout" or whatever group has the required privileges.
That, of course, requires that some group has rw privs. Ken On Wed, Jan 20, 2016 at 5:52 PM, Gene Heskett <[email protected]> wrote: > On Friday 01 January 2016 12:01:25 EBo wrote: > > > On Jan 1 2016 9:21 AM, Gene Heskett wrote: > > > On Friday 01 January 2016 10:21:42 EBo wrote: > > >> Various distros are a little different, but there is usally > > >> something > > >> like a plugdev or usb group. If you add you user to that you might > > >> get around the problem. > > >> > > >> On Jan 1 2016 3:13 AM, Gene Heskett wrote: > > >> > Greetings all; > > >> > > > >> > This is essentially unrelated to LinuxCNC, but I believe is > > >> > > >> related > > >> > > >> > to > > >> > the install. > > >> > > > >> > I have a cron job that uploads the next years schedule for the > > >> > > >> front > > >> > > >> > decks evening lights on Jan 1 of every year. I got an email > > >> > advising me > > >> > it couldn't access /dev/ttyUSB0 and that I should check > > >> > > >> permissions. > > >> > > >> > Looking at it, root:root was the owner/group. So I became root > > >> > > >> and > > >> > > >> > chowned it to me:me, and everything heyu related works once > > >> > again. > > >> > > > >> > This had worked perfectly with whatever the defaults were, and > > >> > did so 2 > > >> > or 3 times because I wanted to turn them off early, since the > > >> > last reboot 9+ days ago, so the only thing changed that sticks > > >> > out like > > >> > > >> a > > >> > > >> > sore thumb is the year. > > >> > > > >> > Does anyone have a clue, or should I just put the fix into > > >> > /etc/rd.local? > > >> > > > >> > Cheers, Gene Heskett > > > > > > Both me and heyu were members of group tty already. I just added us > > > to > > > plugdev too so we'll see after the next reboot. Thanks Ebo. > > > > Let me know if that works. What I was also trying to imply is that > > you might need to look at the docs for your distro and see if there is > > anything specific that needs to be done. Fortunately/Unfortunately, > > as soon as I fix this problem (which each install/new-user, I promptly > > forget what I put in the magic sauce... > > > EBo; & anybody else with a problem that walks like this duck: > > I finally said to hell with it and added these lines to my /etc/rc.local > file. > =============================== > # Now, udev is being a cast iron bitch, so lets see if we can outwit udev > # and make heyu work. > chmod 0755 /dev/ttyUSB0 > chown gene:gene /dev/ttyUSB0 > =============================== > > And its worked a treat for 2 reboots now. And what udev thinks it has > done 10 seconds earlier is moot. It is after all, _MY_ machine and > should do what _I_ want. > > > ---------------------------------------------------------------------- > >-------- _______________________________________________ > > Emc-developers mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > Cheers, Gene Heskett > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 > _______________________________________________ > Emc-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-developers > -- Kenneth Lerman 55 Main Street Newtown, CT 06470 ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
