From: Hugh Sasse Staff Elec Eng <hgs@...>
Date: 2000-06-30T18:38:06+01:00
Subject: [ruby-talk:03724] Re: sending output to a file or to tee.

On 29 Jun 2000, Dave Thomas wrote:

> Hugh Sasse Staff Elec Eng <hgs@dmu.ac.uk> writes:
> 
> > I have a rather large ruby program, too large to post. When I run it the
> > standard output is produced as I expect. When I run the program with the
> > output | tee or redirected to a file, output goes so far and no more data
> > is added to the screen or the file.
> 
> Is your large program long-running, and are you waiting for the output 
> as it runs? If so, you might want to check to see if your output is
> being buffered--many I/O libraries will buffer output which isn't

	That must be it.  I have not done anything to alter the buffering
	hehaviour.   I'll look into this some more.  

> going to a terminal device. Once you pipe stdout to another program,
> it isn't going to a terminal, and so the behavior changes.

	The only odd thing was that when I sent it to a file tail -f
	on the file showed no more data going in, but that could be
	buffering too.  Hmmm.  Thank you.
> 
> Regards
> 
> 
> Dave
> 
> 
	Hugh