X-Recipient: archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status: No, hits=-1.6 required=5.0	tests=AWL,BAYES_00,KHOP_THREADED,SPF_HELO_NEUTRAL
X-Spam-Check-By: sourceware.org
Message-Id: <201206201453.q5KEruLu009866@localhost.localdomain>
to: cygwin AT cygwin DOT com
From: Tom Rodman <cygzr AT trodman DOT com>
Reply-to: cygwin AT cygwin DOT com
Subject: Re: GNU screen not seeing $SHELL env var?
In-reply-to: <4FE1D93E.5060108@redhat.com>
References: <201206201320 DOT q5KDKWp4005645 AT localhost DOT localdomain> <4FE1D93E DOT 5060108 AT redhat DOT com>
Date: Wed, 20 Jun 2012 09:53:56 -0500
X-IsSubscribed: yes
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
List-Id: <cygwin.cygwin.com>
List-Unsubscribe: <mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

On Wed 6/20/12 8:07 MDT Eric Blake wrote:
> On 06/20/2012 07:20 AM, Tom Rodman wrote:
> 
> >   $ echo $SHELL
> >   /bin/bash
> >   $ bash -c 'echo SHELL: $SHELL'  # does this prove SHELL is exported?
> >   SHELL: /bin/bash
> 
> No.  And in fact, bash does not export SHELL by default, but defaults to
> defining SHELL as a shell-local variable.  You have to explicitly export
> it yourself if you want child processes to see it.

OK. Thanks, good to know that.

--
Still, not sure why I have to export the SHELL var to GNU screen
now since in the past several years I have not done this.
Recently I stopped using 'putty -ssh localhost' for my terminal,
and I'm using 'rxvt' instead, but I can not see why that would
matter.  In Linux, 'screen' sets up login shells correctly, I
use the same ~/.screenrc for both cygwin and linux, and I'm not
exporting SHELL to screen in linux.

Non cygwin question: what is the best way to tell GNU screen to
read /etc/passwd to get SHELL, and start all new screen windows
with login shells?

--
thanks,
Tom



--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple