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Re: Bug#990086: apt-key is deprecated in bullseye, how to manage keys instead

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On Sat, Jun 26, 2021 at 08:42:26AM -0400, Cindy Sue Causey wrote:
> On 6/26/21, Andrei POPESCU <andreimpopescu@gmail.com> wrote:

[...]

> > Well, it makes perfect sense if you remember that "everything is a
> > file", even if there are exceptions (e.g. network devices).
> 
> 
> Hopefully I'm reading this right. While on dialup, I spent A LOT of
> time battling a well-known closed source modem tty* driver. Out of
> desperation, I could sometimes get it to work by copying it between
> hard drives that contained separate operating systems.
> 
> BUT you can't just e.g. "cp" or "right click > copy" it over. It would
> fail with a "Can't copy special file" error message. I know this
> because I just did it again with ttyS0. You CAN rsync it between
> partitions, and it would be viable, usable.

Wait a sec. You are not trying to copy /dev/ttyS0 (or its kin)?

Because that won't really make much sense. Or, well, it will perhaps
do surprising things.

See, /dev/ttyS0 is a representation of an external device (your first
serial interface, if your computer still has such a thing). You can
open it, read from it (which will yield incoming characters), write
to it (which will send the characters out, if all goes well) -- so
to your applications it presents an interface similar to the one
a file presents. This is Andrei's quote "everything is a file".

If you now copy /dev/ttyS0 to /tmp, e.g.

  sudo cp /dev/ttyS0 /tmp

and assuming there's something connected to it and sending us characters,
there will be an ever-growing /tmp/ttyS0 and the copy will terminate
the moment the serial connection's other side "hangs up".

Now if you do

  sudo cp -a /dev/ttyS0 /tmp

you get something completely different: a device file (referring to the
exact same device as your original).

Don't forget to remove them after: your system administrator might get
mighty confused finding a device file in /tmp :-)

Cheers
 - t

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apt-key says deprecated, but not saying what else to use Marco Möller <talby@debianlists.mobilxpress.net> - 2021-06-19 22:10 +0200
  Bug#990086: apt-key is deprecated in bullseye, how to manage keys instead Andrei POPESCU <andreimpopescu@gmail.com> - 2021-06-20 09:30 +0200
    Re: Bug#990086: apt-key is deprecated in bullseye, how to manage  keys instead Andrei POPESCU <andreimpopescu@gmail.com> - 2021-06-21 08:00 +0200
      Re: Bug#990086: apt-key is deprecated in bullseye, how to manage keys  instead Marco Möller <talby@debianlists.mobilxpress.net> - 2021-06-24 16:50 +0200
        Re: Bug#990086: apt-key is deprecated in bullseye, how to manage  keys instead Andrei POPESCU <andreimpopescu@gmail.com> - 2021-06-26 12:00 +0200
          Re: Bug#990086: apt-key is deprecated in bullseye, how to manage keys  instead Marco Möller <talby@debianlists.mobilxpress.net> - 2021-06-26 13:10 +0200
          Re: Bug#990086: apt-key is deprecated in bullseye, how to manage keys instead Cindy Sue Causey <butterflybytes@gmail.com> - 2021-06-26 14:50 +0200
            Re: Bug#990086: apt-key is deprecated in bullseye, how to manage  keys instead <tomas@tuxteam.de> - 2021-06-26 21:00 +0200
              Re: Bug#990086: apt-key is deprecated in bullseye, how to manage keys instead Nicholas Geovanis <nickgeovanis@gmail.com> - 2021-06-29 03:10 +0200
  Re: apt-key says deprecated, but not saying what else to use Darac Marjal <mailinglist@darac.org.uk> - 2021-06-20 14:20 +0200
    Re: apt-key says deprecated, but not saying what else to use Gene Heskett <gheskett@shentel.net> - 2021-06-20 14:50 +0200
      Re: apt-key says deprecated, but not saying what else to use Dan Ritter <dsr@randomstring.org> - 2021-06-20 16:30 +0200
        Re: apt-key says deprecated, but not saying what else to use Charles Curley <charlescurley@charlescurley.com> - 2021-06-20 17:30 +0200
        Re: apt-key says deprecated, but not saying what else to use Gene Heskett <gheskett@shentel.net> - 2021-06-20 17:40 +0200
        Re: apt-key says deprecated, but not saying what else to use Gene Heskett <gheskett@shentel.net> - 2021-06-20 19:00 +0200
          Re: apt-key says deprecated, but not saying what else to use <tomas@tuxteam.de> - 2021-06-20 19:10 +0200
          Re: apt-key says deprecated, but not saying what else to use Greg Wooledge <greg@wooledge.org> - 2021-06-20 21:10 +0200
            Re: apt-key says deprecated, but not saying what else to use Dan Ritter <dsr@randomstring.org> - 2021-06-20 21:20 +0200
          Re: apt-key says deprecated, but not saying what else to use Dan Ritter <dsr@randomstring.org> - 2021-06-20 21:10 +0200
        Re: apt-key says deprecated, but not saying what else to use Jonathan Dowland <jon+debian-user@dow.land> - 2021-06-21 11:10 +0200
    Re: apt-key says deprecated, but not saying what else to use Marco Möller <talby@debianlists.mobilxpress.net> - 2021-06-24 14:50 +0200
  Re: apt-key says deprecated, but not saying what else to use Brad Rogers <brad@fineby.me.uk> - 2021-06-20 18:10 +0200
    Re: apt-key says deprecated, but not saying what else to use Marco Möller <talby@debianlists.mobilxpress.net> - 2021-06-24 15:20 +0200

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