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Re: Data piped to 'mapfile', 'readarray', 'read -a' shell builtins is ig


From: Greg Wooledge
Subject: Re: Data piped to 'mapfile', 'readarray', 'read -a' shell builtins is ignored
Date: Wed, 24 Mar 2010 10:16:05 -0400
User-agent: Mutt/1.4.2.3i

On Wed, Mar 24, 2010 at 04:10:41PM +0200, Pierre Gaston wrote:
> On Wed, Mar 24, 2010 at 12:43 AM, Rob Robason <address@hidden> wrote:
> >    $ ls -a | readarray            # using the default MAPFILE array
> It's a faq, commands in a pipe are executed in a subshell and don't modify
> the parent shell.

And the workaround for this is to use process substitution:

  readarray < <(your command)

(Don't use ls -a for this.  Horrible example.  If you want to stuff an
array with files, just use array=(*) instead, possibly turning on dotglob
and/or nullglob first.)




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