From: Vincent Lefevre <vincent@vinc17.org>
To: zsh-users@sunsite.dk
Subject: Re: why does "jobs | wc" not work?
Date: Tue, 26 Nov 2002 12:59:26 +0100 [thread overview]
Message-ID: <20021126115926.GH27620@greux.loria.fr> (raw)
In-Reply-To: <20021126114222.GG1937@gmx.de>
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@vinc17.org> - Web: <http://www.vinc17.org/> - 100%
validated (X)HTML - Acorn Risc PC, Yellow Pig 17, Championnat International
des Jeux Mathématiques et Logiques, TETRHEX, etc.
Work: CR INRIA - computer arithmetic / SPACES project at LORIA
next prev parent reply other threads:[~2002-11-26 12:00 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-26 10:49 Dominik Vogt
2002-11-26 10:56 ` Vincent Lefevre
2002-11-26 11:09 ` Peter Stephenson
2002-11-26 11:17 ` Vincent Lefevre
2002-11-26 11:27 ` Peter Stephenson
2002-11-26 11:42 ` Dominik Vogt
2002-11-26 11:59 ` Vincent Lefevre [this message]
2002-11-26 12:08 ` Peter Stephenson
2002-11-26 12:48 ` Dominik Vogt
2002-11-26 13:05 ` Peter Stephenson
2002-11-26 13:33 ` Dominik Vogt
2002-11-26 17:20 ` Danek Duvall
2002-11-26 13:13 ` Vincent Lefevre
2002-11-26 11:24 ` Stephane Chazelas
2002-11-26 17:11 Borzenkov Andrey
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20021126115926.GH27620@greux.loria.fr \
--to=vincent@vinc17.org \
--cc=zsh-users@sunsite.dk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).