From: Meino Christian Cramer <Meino.Cramer@gmx.de>
To: schaefer@brasslantern.com
Cc: zsh-users@sunsite.dk
Subject: Re: Is this possible with MULTIOS
Date: Mon, 23 Oct 2006 06:41:23 +0200 (CEST) [thread overview]
Message-ID: <20061023.064123.74746266.Meino.Cramer@gmx.de> (raw)
In-Reply-To: <061022193054.ZM16624@torch.brasslantern.com>
From: Bart Schaefer <schaefer@brasslantern.com>
Subject: Re: Is this possible with MULTIOS
Date: Sun, 22 Oct 2006 19:30:54 -0700
> On Oct 22, 4:16pm, Meino Christian Cramer wrote:
> }
> } upcnt=`<update-cmd> | <filter> | wc -l`
> } if [ 0 -ne upcnt ]
>
> If the filter is grep, it exits with a success code when it finds a
> matching line or with failure when it does not, so you should be able
> to do
>
> if update-cmd | grep ...
> then recompile
> else ...
> fi
>
> This would behave differently only if grep matched some lines and then
> exited with an error.
>
> However, to answer your literal question, yes, you can do this with
> multios. You just have to open an extra descriptor outside of the
> subshell and redirect stdout to it inside the subshell.
>
> setopt multios
> uncnt=$(update-cmd | filter 1>&3 | wc -l) 3>&1
>
Hi Bart,
*thanks a lot* :)
Both solutions will help me !
Have a nice week!
mncc
prev parent reply other threads:[~2006-10-23 4:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-22 14:16 Meino Christian Cramer
2006-10-23 2:30 ` Bart Schaefer
2006-10-23 4:41 ` Meino Christian Cramer [this message]
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