From: Robert Klemme <bob.news@...>
Date: 2003-07-30T11:21:48+09:00
Subject: Re: is it possible to pipe ruby to more / cat / arbitrary programs?


"Tuan Bui" <tuanbui@cray.com.nospam> schrieb im Newsbeitrag
news:bg366r$kcr$1@flapjack.cray.com...
> Good morning,
>
>
> I use Ruby as a scripting layer over another program, and I want to be
> able to pipe the output of that program to unix programs.  Is this
> possible?  I'm trying to do something like this:
>
>
> #this will return output from the program in a string
> programoutput = @program.send(input)
>
> #destprogram might be cat, grep, more, less, any such program
> programoutput pipeoutput serr = Open3.popen3(destprogram)
>
> Does anyone know of a way to do this?
>
> Thanks, and have a grand old day.

You can simply do

system 'program | other'

Or you can copy it yourself

IO.popen( "ls", "r" ) do |ls|
  IO.popen( "cat", "w" ) do |cat|
    ls.each do |line|
      cat.puts line
    end
  end
end


Regards

    robert