On Thursday 06 June 2019 05:55:36 pm bw wrote: > In-Reply-To: <[email protected]> > > >On Thursday 06 June 2019 08:37:36 am bw wrote: > >> In-Reply-To: <[????] [email protected]> > >> <snip> > >> > >> >So what I'd like for it to do, is be totally silent during the > >> > rest of this machines boot, and once a user, me, is logged in, go > >> > away just as silently, freeing the only serial hardware port for > >> > my own use. > >> > >> ... > >> > >> I think the first place I'd look is: > >> > >> man logind.conf > >> Nothing of use there.
> >> there may be something there to help you figure it out. Then look > >> into override if necessary with something like: > >> > >> systemctl edit [email protected] > > > >Might be, but the dead keyboard hit it 30 minutes back so I rebooted > > and now its normal. I need a near beer. > > > >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> > > You have a definite style Gene, and a tenaciousness that I really > admire. I'm assuming after all this time you are doing some work and > have a functioning system going, congratulations. > Like Sam Clemens, I have never let my education get in the way of my learning. But my education is 8th grade, I went to work in the late 40's fixing radio and tv's for a living, before that I wired a house my stepfather built right after the end of WW-II. I was 12 at the time. I was a nerd before the word was invented. That scared the girls off so I was late finding one that wanted to sleep on the bottom. Good woman but I lost her to a stroke 10 years later. So life's had its ups and downs. I finished up my working time at 67, the last 18 years at the local CBS affiliate, as the Chief and often only engineer, one who had a reputation for fixing things. Along the line I picked up an fcc 1st phone, and I'm also a C.E.T. Sat for the mensa, but failed, this was about 6 months after I had a pulmonary embolism which hurt my brain some I think. Survival rates from those are well under 10%. He's had several opportunities, but I don't think he wants to deal with me just yet. :) That got me 4F'd during Korea, they had no use for anyone who scored a 98 on the AFQT. They were looking for machine gun targets I guess. The next best score out of 130 some other boys was 36. > For future reference, you can prevent any systemd service from > starting by putting a link to /dev/null in /etc/systemd/system AFAIK > that is exactly what 'systemctl mask' does, but the benefit from using > systemctl is it also checks your spelling. > > I don't think all the 6 getty@ services are started at boot like with > inittab, the particualt getty appears after the VT is activated. You > can mask one or override it as you want with systemctl edit > getty@ttyWHATEVER and this is pretty cool. You could setup things to > do whatever when any particular VT is activated. > > good luck > bw Not getting anyplace so far, but the reboot has given me only one agetty running on tty1, which looks like exactly what /etc/systemd/system/getty.target.wants/[email protected] wants. It also says as a comment: # On systems without virtual consoles, don't start any getty. Note # that serial gettys are covered by [email protected], not this # unit. root@coyote:getty.target.wants$ locate [email protected] /lib/systemd/system/[email protected] But wouldn't a link to that have to exist in this /etc/systemd tree? But no [email protected] exists in this tree, but it does exist as /lib/systemd/system/[email protected] So what sort of a precondition that didn't happen on this reboot, would trigger this above file to grab and lockup /dev/ttyS0 like it did on the last reboot. I am beginning to get a very dim glimmer of how systemd works. And its not impressing me. Thanks bw, you gave me some usefull clues. Take care. 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>
