From: Brian Candler <b.candler@...>
Date: 2009-07-07T20:10:53+09:00
Subject: Re: $stdout to printer

All this assumes you can open a channel to your printer from Ruby. 
Options you could try, as I'm afraid I don't have a Windows box with a 
printer:

(1) File.open("prn:","w") { |f| ... }

(2) IO.popen("print","w") { |f| ... }

(or whatever the command-line tool is for printing a file)

(3) Write the report to a file, then you *must* be able to print it 
somehow.

  system("print out.txt")
  system("type out.txt >prn")
  ... ?
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