Dump/Restore with shell script

[William Craven]

We are running DYNIX 3.0.15 (~= 4.2BSD) on a Sequent Symmetry S81.  We
want to do incremental dumps across disk partitions.  That is, we wish
to do dumps of the form:

	dump 1df 100000 - /user1 | (cd /backup; restore xf -)

We want to do this as a background process during the wee small hours of
the day, so a script of some kind, fired off by crontab, is to be used. 
The problem is, that "restore" after completing the task asks the question

	add mode for '.' [yn] ?

How does one answer this question from within a script non-
interactively in view that stdin for /etc/restore is already being
used by dump ?

It has been pointed out to me that it is not necessary to restore the
files but keep the dump stored in a single file and hence save time as
restore is very slow. However the question posed may be occur in other
applications.
	
Any help would be appreciated!


William Craven

UNIX Systems			william at syma.sussex.ac.uk
Computing Service
University of Sussex
Falmer, Brighton   BN1 9QJ
United Kingdom