From: Robert Klemme <shortcutter@...>
Date: 2009-04-20T16:10:42+09:00
Subject: Re: what's the differences between IO.popen ( or IO.pipe) and 	PTY.spawn??

2009/4/20 Jun Young Kim <jykim@altibase.com>:
> Actually, I didn't work normally for my case.
>
> after getting a read io pipe, my program is waiting some events by using
> select.
>
> but it always returns nil because the external program did nothing(didn't
> flush something)
>
> thanks for response.

As I said in my previous posting many programs ensure complete lines
are sent to the output channel if it is a terminal but they do not if
the output is a file or pipe because it is assumed that there
immediate delivery does not matter and hence not flushing individual
lines yields more throughput.

Cheers

robert


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