bin/99585: [PATCH] Add option to tee(1) to also copy to standard error

[Dan Ponte]

On Thu, Jun 29, 2006 at 10:35:57PM +1000, Bruce Evans <bde at zeta.org.au> was witnessed plotting the following conspiracy:
> On Wed, 28 Jun 2006, Dan Ponte wrote:
> 
> >>Description:
> >	I recently found myself in a situation where having tee(1) copy to 
> >	standard error and standard output at the same time would be useful, 
> >	so I implemented it.
> >>How-To-Repeat:
> >	Find yourself in said situation.
> >>Fix:
> >	Diff below.
> 
> Why not use a standard utility (tee itself in this case)?
> 
>   genoutput | tee /dev/stderr | tee foo
> 
> copies the stdout of `genoutput' to stderr and to file foo.  This can be
> generalized to any number of copies on any numbers of file descriptors
> or files.
> 
> The main problem with the utility method is is that the plumbing is
> very confusing even for only one extra pipeline stage.  /dev/stderr
> in the above refers to the initial stderr so it isn't affected by
> redirection unless the pipeline stages are run in subshells.  Running
> some of the stages in subshells makes the plumbing even more confusing.
> 
> Bruce
> 
Hrm...this is a good idea. I never thought about that.
-Dan
-- 
Dan Ponte
http://www.theamigan.net/ -- ICQ: 175527699
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To get something done, a committee should consist of no more than three
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