From owner-freebsd-bugs  Fri Jun 14  1:40:46 2002
Delivered-To: freebsd-bugs@freebsd.org
Received: from goose.mail.pas.earthlink.net (goose.mail.pas.earthlink.net [207.217.120.18])
	by hub.freebsd.org (Postfix) with ESMTP id 0DA1237B40E
	for <freebsd-bugs@freebsd.org>; Fri, 14 Jun 2002 01:40:41 -0700 (PDT)
Received: from sdn-ar-003dcwashp207.dialsprint.net ([206.133.21.119] helo=moo.holy.cow)
	by goose.mail.pas.earthlink.net with esmtp (Exim 3.33 #2)
	id 17Imd4-0006CF-00; Fri, 14 Jun 2002 01:40:23 -0700
Received: by moo.holy.cow (Postfix, from userid 1001)
	id 5BC5851458; Fri, 14 Jun 2002 04:42:27 -0400 (EDT)
Date: Fri, 14 Jun 2002 04:42:27 -0400
From: parv <parv@pair.com>
To: Peter Pentchev <roam@ringlet.net>
Cc: freebsd-bugs@FreeBSD.org
Subject: Re: bin/39198: sh aborts on variables with periods
Message-ID: <20020614084226.GA62568@moo.holy.cow>
References: <200206140750.g5E7o3A03840@freefall.freebsd.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <200206140750.g5E7o3A03840@freefall.freebsd.org>
Sender: owner-freebsd-bugs@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-bugs.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-bugs>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-bugs>
X-Loop: FreeBSD.org

in message <200206140750.g5E7o3A03840@freefall.freebsd.org>,
wrote Peter Pentchev thusly...
>
>  if [ "$SHELL" = "/bin/ksh" ]; then
>  	ksh-specific code
>  else
>  	plain ol' Bourne shell
>  fi
>
>  ..or maybe even..
>
>  if expr "$SHELL" : '.*ksh$'; then
>  	ksh-specific code
>  else
>  	plain ol' Bourne shell
>  fi
>
>  ..which would match 'ksh', '-ksh', '/bin/ksh', '/usr/local/bin/ksh',
>  and other variations.

one problem w/ using $SHELL is when a second shell is executed as a
subprocess. for example, say i am in bash (login shell) & type
"ksh93" on the prompt, $SHELL will still be set to bash.  so far my
solution is (for either login shell or plain old execution on
prompt) to check $0 ...

case $0 in
  ksh* | -ksh* )
    ksh specific things but still can't use ${.sh.version} if
    expecting (freebsd) bourne shell not to carp
  ;;

  bash* | -bash* )
    $BASH_VERSION should do just fine (at least in v 2.0[45])
  ;;

  * | sh | -sh)
    default/most conservative settings perhaps
  ;;
esac

...below is my ~/.profile (basically for ksh93; sh & bash thrown in
just for fun)...

http://www103.pair.com/parv/comp/unix/cf/sh/profile


  - parv

--


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message