Thanks a bunch for this, it is, effectively, what I wanted to do with pdsend and pdreceive. The only problem now is sending a variable I've defined via this method, as opposed to the variable name, and I'm sure that's just 'cause I'm new to ruby. 

> Date: Thu, 25 Mar 2010 12:16:07 -0700
> Subject: Re: [PD] any mac OS terminal experts?
> From: aturley@acm.org
> To: jbturgid@hotmail.com; pd-list@iem.at
>
> So first off, you don't need to call them with 'open' from the command
> line. You can just run them directly like any other command, like
> this:
> echo "a b c 1 2 3;" |
> /Applications/Pd-extended.app/Contents/Resources/bin/pdsend 3939
> The command reads the standard input and sends the data to PD.
>
> Assuming you have a PD patch running with a netrecieve object
> listening to port 3939, you can send the same message as above with
> this Ruby code:
>
> require 'socket'
> hostname = "localhost"
> port = 3939
> s = TCPSocket.open(hostname, port)
> # don't forget the semicolon!
> s.puts("a b c 1 2 3;")
> s.close()
>
> andy
>
> On Thu, Mar 25, 2010 at 11:28 AM, Andrew Faraday <jbturgid@hotmail.com> wrote:
> > I mean both opening them in finder and using 'open pdsend' in the terminal,
> > same result. I'm not up to socket programming in Ruby. But knowing that it's
> > possible to communicate directly is a good start. Now, how do it do it?
> >
> >> Date: Thu, 25 Mar 2010 11:13:12 -0700
> >> Subject: Re: [PD] any mac OS terminal experts?
> >> From: aturley@acm.org
> >> To: jbturgid@hotmail.com
> >> CC: pd-list@iem.at
> >>
> >> You should be able to run them from the command line. When you say
> >> that you are "opening the files", do you mean you're clicking on them
> >> in the Finder? As you've said, that will just open up a terminal
> >> window.
> >>
> >> Also, these commands just communicate with strings over a TCP socket.
> >> If you're comfortable with socket programming in Ruby then you don't
> >> even have to use pdsend and pdreceive.
> >>
> >> andy
> >>
> >> On Thu, Mar 25, 2010 at 10:55 AM, Andrew Faraday <jbturgid@hotmail.com>
> >> wrote:
> >> > Hey All
> >> > I've recently started learning Ruby (on Ubuntu 9.04), part of what I'm
> >> > trying to do is control PD through ruby, using the terminal.
> >> > The main trouble I'm having now is that I'm mostly using a Mac OS X
> >> > machine
> >> > which doesn't recognize the 'pdsend' and 'pdreceive' commands (as the
> >> > linux
> >> > shell does). I've tried opening the files with these names in
> >> > /resources/bin
> >> > which open a new terminal window and display what looks like the
> >> > relevant
> >> > -help text. But I can't seem to use these to send messages to and from
> >> > pd
> >> > from the Mac OS terminal. (in theory I could then automate this with
> >> > Ruby).
> >> > Any ideas, at all?
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