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From: Anant Narayanan <anant@kix.in>
Subject: Re: [9fans] Ideas for an printer filesystem
Date: Fri, 30 Nov 2007 22:16:46 +0530
To: weigelt@metux.de,
	Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
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> Only copying one file is not enough, otherwise you have no chance
> for giving additional parameters like colorspace, orientation,
> resolution, etc, etc, etc. The application would have to handle all
> this by itself and would require more detailed information about the
> printer (which would tie the job to one specific printer).

How about simply:

$ echo "print <printing-options> <printer-options>" > /printers/ctl
$ cat myfile > /printers/data

Skipping either the printing/printer options while writing to ctl  
will result in default options being applied.

--
Anant