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Re: How do you access the printer in Linux/C?

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Tim Watts <tw_usenet@dionic.net> wrote:
>On 07/04/15 01:07, pureheart@pacbell.net wrote:
>> Might really be a programming question.
>
>It's more of an OS question.
>
>The general answer to "without going through lpr" is "don't try".

That needs to be emphasised.  It should say:

  *"Don't even think about it!  Ever!"*

CUPS, or another print spooler, is there for a good
reason, and normal users on a multi-user multi-tasking
system should never directly access hardware such as a
printer.

Piping a file into lp or lpr using system() is one way,
and it works relatively well.  Using popen() to access
the spooler, and then fprint() to send it the data
without writing it to a file, is a much better way.

-- 
Floyd L. Davidson                         http://www.apaflo.com/
Ukpeagvik (Barrow, Alaska)                      floyd@apaflo.com

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How do you access the printer in Linux/C? pureheart@pacbell.net - 2015-04-06 17:07 -0700
  Re: How do you access the printer in Linux/C? Tim Watts <tw_usenet@dionic.net> - 2015-04-07 04:23 +0100
    Re: How do you access the printer in Linux/C? The Natural Philosopher <tnp@invalid.invalid> - 2015-04-07 05:46 +0100
    Re: How do you access the printer in Linux/C? floyd@apaflo.com (Floyd L. Davidson) - 2015-04-07 02:16 -0800
      Re: How do you access the printer in Linux/C? Tim Watts <tw_usenet@dionic.net> - 2015-04-07 11:30 +0100
        Re: How do you access the printer in Linux/C? The Natural Philosopher <tnp@invalid.invalid> - 2015-04-07 11:51 +0100
          Re: How do you access the printer in Linux/C? floyd@apaflo.com (Floyd L. Davidson) - 2015-04-07 03:11 -0800
            Re: How do you access the printer in Linux/C? The Natural Philosopher <tnp@invalid.invalid> - 2015-04-07 12:37 +0100
              Re: How do you access the printer in Linux/C? pureheart@pacbell.net - 2015-04-07 08:31 -0700
          Re: How do you access the printer in Linux/C? Tim Watts <tw_usenet@dionic.net> - 2015-04-07 12:24 +0100
        Re: How do you access the printer in Linux/C? Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-04-07 16:26 +0000
      Re: How do you access the printer in Linux/C? The Natural Philosopher <tnp@invalid.invalid> - 2015-04-07 11:46 +0100
      Re: How do you access the printer in Linux/C? Unknown <dog@gmail.com> - 2015-05-06 08:50 +0000
        Re: How do you access the printer in Linux/C? Joe Beanfish <joebeanfish@nospam.duh> - 2015-05-06 13:36 +0000
          Re: How do you access the printer in Linux/C? Unknown <dog@gmail.com> - 2015-05-08 10:44 +0000
            Re: How do you access the printer in Linux/C? Joe Beanfish <joebeanfish@nospam.duh> - 2015-05-08 13:51 +0000
              Re: How do you access the printer in Linux/C? William Unruh <unruh@invalid.ca> - 2015-05-08 14:58 +0000
                Re: How do you access the printer in Linux/C? Joe Beanfish <joebeanfish@nospam.duh> - 2015-05-11 13:24 +0000
                Re: How do you access the printer in Linux/C? Robert Heller <heller@deepsoft.com> - 2015-05-11 14:40 -0500
            Re: How do you access the printer in Linux/C? William Unruh <unruh@invalid.ca> - 2015-05-08 14:55 +0000
  Re: How do you access the printer in Linux/C? The Natural Philosopher <tnp@invalid.invalid> - 2015-04-07 05:43 +0100
  Re: How do you access the printer in Linux/C? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-04-07 12:15 -0400
    Re: How do you access the printer in Linux/C? pureheart@pacbell.net - 2015-04-09 15:39 -0700

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