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Re: Variable undefines - bug or feature?


From: DJ Mills
Subject: Re: Variable undefines - bug or feature?
Date: Mon, 23 Jan 2012 15:00:33 -0500

On Mon, Jan 23, 2012 at 2:58 PM, Denis Melnikov <address@hidden> wrote:
> Hi,
> after the following fragment of code named variable gets empty:
>
> ls | while read file ; do
>  v=1
>  break
> done
> echo $v
>
> Is it a bug or a feature?
> GNU bash, version 4.1.2(1)-release
>
> Denis
>

Pipelines create subshells. See http://mywiki.wooledge.org/BashFAQ/024

As an aside, never parse ls. Simply use a glob.



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