[vox-tech] Idea for 'tee' -- shut up already!

[Chanoch (Ken) Bloom]

On Fri, 2010-12-03 at 14:13 -0800, Bill Kendrick wrote:
> So I'm grepping & cut'ing a huge log file (6.4 million lines)
> and made the mistake of deciding to pipe it through "tee" to
> watch for a while.  I forgot to do this from within a "screen"
> session, so I'm kind of stuck staring at it in a terminal.  *sigh* :)
> 
> I don't want to watch any more, and wish I could do something like,
> I dunno maybe like this...?
> 
> 
>   $ cat hugefile.log | grep whatever | cut -f 1,2,3 | tee output.txt
>   {huge dump of data}
>   ^Z
>   [1]+  Stopped    cat hugefile.log | grep whatever | cut -f 1,2,3 | tee output.txt
>   $ kill -SIGUSR1 %1
> 
> And then resume:
> 
>   $ fg
>   {wonderful silence}
> 
> 
> or background:
> 
>   $ bg
>   [1]+    cat hugefile.log | grep whatever | cut -f 1,2,3 | tee output.txt &
>   $ 
> 
> 
> In other words, a way to tell tee to "shut up" and stop dumping to stdout
> any more (but keep copying from stdin to the file specified).
> 
> 
> I wonder, is there any other Linux'y trick I can use in the meantime?
> (Maybe fiddling in /proc ? ;) )

Once upon a time, I hacked tee to do this, but I can't find my source
code anymore. I think it even responded to SIGUSR1.

However, I still have the binary in my git history. It's attached.

--Ken

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