rundig.sh -- a script to drive ht://Dig updates

Copyright (c) 1998 Colin Viebrock <cmv@shmooze.net>
Copyright (c) 1998-2001 Geoff Hutchison <ghutchis@wso.williams.edu>
Distributed under the GNU GPL version 2 or later

rundig.sh is a complete rewrite of the rundig shell script that comes
with the htdig source distributions.  While rundig always reindexes from
scratch, this rundig.sh script handles updating of existing databases
while still allowing simultaneous searching to take place.  It does this
by using the -a option to htdig and htmerge (or htpurge), and doing the
necessary file manipulations.  There are two versions of this script here:

rundig.sh	Adapted for ht://Dig 3.1.x
rundig.3.2.sh	Updated for ht://Dig 3.2.0b3 Feb 2001

Use the one that's suitable for the version you're running.  Distributions
of ht://Dig before March 2001, namely 3.1.5 or earlier and 3.2.0b3 or
earlier, included a rundig.sh script in the contrib/examples subdirectory,
which was written for the older gdbm-based 3.0.x version.  Future releases
will include the appropriate versions of this script.