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From: csg@pyramid.pyramid.com (Carl S. Gutekunst)
Newsgroups: comp.unix.questions
Subject: Re: How to prevent low-grade uucp work during daytime?
Message-ID: <4780@pyramid.pyramid.com>
Date: Wed, 12-Aug-87 16:46:23 EDT
Article-I.D.: pyramid.4780
Posted: Wed Aug 12 16:46:23 1987
Date-Received: Sat, 15-Aug-87 02:00:19 EDT
References: <3572@cit-vax.Caltech.Edu>
Reply-To: csg@pyramid.UUCP (Carl S. Gutekunst)
Organization: Pyramid Technology Corp., Mountain View, CA
Lines: 29
Keywords: uucico grade time-to-call restrictions

In article <3572@cit-vax.Caltech.Edu> mangler@cit-vax.Caltech.Edu (System Mangler) writes:
>How can I tell slave-mode uucico to defer low-grade work during
>those hours?

The intention of grading in 4.3BSD was to keep phone bills down, not to reduce
machine load. Hence, if a machine calls you and isn't picky about grade, then
everything goes.

But you can do what you want: run the slave uucico from a shell script with
the appropriate options. We do this for news all the time. Something like:

	nuucp:xyzzyxyzzyxyz:6:1:UUCP Login:/usr/lib/uucp:/usr/lib/uucp/uugraded

where the file /usr/lib/uucp/uugraded contains

	#!/bin/sh
	exec /usr/lib/uucp/uucico -gc

Of course, the script can be as ellaborate as you like, checking the time and
so on.

One DANGEROUS security hole: if you run a shell script like this, then make
sure that the home directory for the login is *NOT* uucppublic. Otherwise you
will have a world-writable directory from which the shell may look for a login
startup script. (Actually, I believe 4.3BSD /bin/sh will not run .profile if
it is invoked non-interactively as it is here. But /bin/csh definitely runs
its .login and .cshrc scripts. And why take unnecessary chances?)

<csg>