From: Bart Schaefer <schaefer@brasslantern.com>
To: Peter Stephenson <p.stephenson@samsung.com>,
Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: "echo | ps -j $(:) | cat | cat | cat" runs components in different process groups
Date: Sun, 15 Apr 2018 10:38:07 -0700 [thread overview]
Message-ID: <CAH+w=7ZVx_uJQkJgSn-4wdyfRece6AADPWb+S=F1q2oJWai67w@mail.gmail.com> (raw)
In-Reply-To: <20180415162326.GA12549@chaz.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 400 bytes --]
On Sun, Apr 15, 2018 at 9:23 AM, Stephane Chazelas <
stephane.chazelas@gmail.com> wrote:
>
> Also note that
>
> echo $(sleep 10) & echo started
>
> Only outputs "started" after 10 seconds.
>
I would say that's actually correct. $(sleep 10) is *not* a background
job, it's output has to be collected before the first "echo" can run. The
shell has no intrinsic idea that there won't be any output.
next prev parent reply other threads:[~2018-04-15 17:38 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-23 16:16 Stephane Chazelas
2018-03-23 23:36 ` Bart Schaefer
2018-03-24 5:19 ` Bart Schaefer
2018-03-24 8:05 ` Joey Pabalinas
2018-03-24 17:34 ` Stephane Chazelas
2018-03-24 22:23 ` Bart Schaefer
2018-03-25 7:00 ` Stephane Chazelas
2018-03-25 8:26 ` Stephane Chazelas
2018-03-25 7:48 ` Stephane Chazelas
2018-03-25 18:09 ` Stephane Chazelas
2018-03-27 10:17 ` Stephane Chazelas
2018-03-24 22:09 ` Bart Schaefer
2018-04-10 11:45 ` Peter Stephenson
2018-04-10 13:59 ` Peter Stephenson
2018-04-11 22:10 ` Bart Schaefer
2018-04-12 16:23 ` Peter Stephenson
2018-04-15 16:23 ` Stephane Chazelas
2018-04-15 17:38 ` Bart Schaefer [this message]
2018-04-15 18:58 ` Stephane Chazelas
2018-04-17 5:39 ` Bart Schaefer
2018-04-17 9:19 ` Peter Stephenson
2018-04-17 16:09 ` Bart Schaefer
2018-04-17 16:27 ` Bart Schaefer
2018-04-17 16:35 ` Peter Stephenson
2018-04-17 17:52 ` Bart Schaefer
2018-04-19 9:40 ` Peter Stephenson
2018-04-20 9:28 ` Forking earlier for background code Peter Stephenson
2018-04-20 10:01 ` Peter Stephenson
2018-04-20 12:54 ` Vin Shelton
[not found] ` <CGME20180420132008eucas1p1c297624e870975cd892c74254970faab@eucas1p1.samsung.com>
2018-04-20 13:20 ` Peter Stephenson
2018-04-20 16:01 ` Vin Shelton
2018-04-23 8:29 ` Peter Stephenson
2018-05-01 9:23 ` Peter Stephenson
[not found] ` <F3A62E38-24E2-4A62-8E19-F54C9B81E9E5@kba.biglobe.ne.jp>
2018-04-23 13:52 ` "echo | ps -j $(:) | cat | cat | cat" runs components in different process groups Peter Stephenson
2018-04-23 14:03 ` Peter Stephenson
[not found] ` <CGME20180423140859eucas1p2591bf1422614209979d4890383268c37@eucas1p2.samsung.com>
2018-04-23 14:08 ` Peter Stephenson
2018-04-23 15:29 ` Jun T.
2018-04-18 6:29 ` Stephane Chazelas
2018-04-18 16:33 ` Bart Schaefer
2018-04-10 9:53 ` Peter Stephenson
2018-03-25 7:38 ` Stephane Chazelas
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