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Re: why does "jobs | wc" not work?

X-seq: zsh-users 5526
From: Vincent Lefevre <vincent@xxxxxxxxxx>
To: zsh-users@xxxxxxxxxx
Subject: Re: why does "jobs | wc" not work?
Date: Tue, 26 Nov 2002 12:59:26 +0100
In-reply-to: <20021126114222.GG1937@xxxxxx>
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References: <20021126104930.GE1937@xxxxxx> <18744.1038308955@xxxxxxx> <20021126114222.GG1937@xxxxxx>

On Tue, Nov 26, 2002 at 12:42:22 +0100, Dominik Vogt wrote:
> On Tue, Nov 26, 2002 at 11:09:15AM +0000, Peter Stephenson wrote:
> > In zsh
> > 
> > jobs | anything
> > 
> > causes the shell to fork for the left hand side of the pipeline.
> 
> Um, why must builtin commands run in a subshell?  I would have
> naively thought commands like "echo something | ..." would just
> run in the current shell.  Spawning a subshell sounds a bit
> inefficient.

On the contrary, both commands can run asynchronously. Thus, this is
more efficient, well at least for commands that take time.

-- 
Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <http://www.vinc17.org/> - 100%
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Work: CR INRIA - computer arithmetic / SPACES project at LORIA

References:
- why does "jobs | wc" not work?
  - From: Dominik Vogt
- Re: why does "jobs | wc" not work?
  - From: Peter Stephenson
- Re: why does "jobs | wc" not work?
  - From: Dominik Vogt

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