Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!usc!hacgate!lori
From: lori@hacgate.scg.hac.com (Lori Barfield)
Newsgroups: comp.sys.apollo
Subject: Re: go to old directory == 'back' ??
Summary: global vars
Keywords: Aegis shell levels
Message-ID: <4202@hacgate.scg.hac.com>
Date: 28 Jun 89 23:52:02 GMT
References: <678@idacom.UUCP>
Organization: Hughes Aircraft Company, El Segundo  CA
Lines: 31

In article <678@idacom.UUCP>, danny@idacom.UUCP (Danny Wilson) writes:
> 
> However, because the variable 'old' gets set at a lower shell level it
> is undefined within program 'back'. Has anyone got a solution for
> a (seemingly) easy problem like this?

You can export the variable in ~user_data/sh/startup.
Try a script with x:='hello'; export x; then at the prompt do a lvar.
See what I mean?

(I'm writing off the top of my head now, so if the syntax here is goofy
send me email.  I just thought you waited long enough for such a simple
answer.)

You may also want to know about a command called "source".
If you invoke an Aegis script with source, it's the same as including
that code in the calling file:  Variable declarations and settings will
belong to the calling script.  (syntax:  source FILENAME
				instead of just FILENAME to invoke)

The third option is to use DM buffers.  Don't use the unnamed buffer;
users depend on that one if you use any of the std_keys key definitions
files without modifications.  I won't go into details here; it's easy
if you are familiar with DM scripting.  (If you aren't and you decide
to use this approach, you are welcome to email me.)



...lori

ARPA: lori@hacgate.scg.hac.com