From: Ken Bloom <kbloom@...>
Date: 2006-08-30T22:10:32+09:00
Subject: Re: Evading the limit of a pipe's standard input

On Wed, 30 Aug 2006 17:02:08 +0900, Ashley Moran wrote:

> On Wednesday 30 August 2006 08:34, Ashley Moran wrote:
>>    IO.popen("psql -U test test","r+") do |pipe|
>>      Thread.new { loop { pipe.read } }                # fixes it
>>      query.each { |statement| pipe.puts statement }
>>    end
> 
> 
> Actually I lied... I need a "sleep 2" at the end of the IO.popen block for 
> this to work.  Is there a less magical way to sync it?  (I took a stab at 
> Process.wait but it doesn't work.)
> 
> Ashley
>

Since you're throwing away the output, instead of using a thread, why try
one of the following:
* popen with the mode "w"
IO.popen("psql -U test test","w") 
* redirect the results from pgsql to /dev/null inside the popen call
IO.popen("psql -U test test >
/dev/null","r+") 

--Ken

-- 
Ken Bloom. PhD candidate. Linguistic Cognition Laboratory.
Department of Computer Science. Illinois Institute of Technology.
http://www.iit.edu/~kbloom1/