add 1-step wrapper script

USAGE: save-restore.sh [ ipset-save-file(s) ]

Expects to be called with some filenames or in a folder with
files matching *.save.  Orchistrates save-count, ccombine-counts,
and combine-saves to load all of the unique ip addresses in
all the ipset save files into sets that fit them.

save-restore.sh

@@ -0,0 +1,60 @@
+#!/usr/bin/bash
+# save-restore - restore files made with ipset(1) save
+# Copyright (C)2026 Corwin Brust <corwin@bru.st>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+#################
+#
+# Work in the current directory
+# 1. Look for files named on the command line
+# 1.1 ..on the command line or, otherwise
+# 1.2 .. in CWD as *.save
+# 2. Create a flat-file "DB" with lines in the form NAME MAX
+# 3. Sort and reduce DB combining counts for non-empty sets
+# 4. Filter files into ipset restore
+#
+#################
+
+folder=${folder:-}
+
+savext=${savext:-.save}
+
+db=${db:-name-maxelem.db}
+dbtmp=${dbtmp:-$db.tmp}
+ipset=${ipset:-$(which ipset)}
+ipsetcmd=${ipsetcmd:-restore}
+scriptdir=${scriptdir:-$(dirname $0)}
+savecnt="${scriptdir}/save-count.pl"
+sortcnt="${scriptdir}/combine-counts.pl"
+loadset="${scriptdir}/combine-saves.pl"
+
+files=${files:-"$@"}
+
+if test -z "$files" ; then
+    files=$(ls -1 ${folder}*${savext} 2>/dev/null)
+fi
+if test -z "$files" ; then
+    echo "No ipset save files.";
+    exit 1;
+fi
+#echo "'$files'"
+
+cat "$files" | \
+    $savecnt >$dbtmp \
+    && $sortcnt <$dbtmp >$db \
+    && cat "$files" \
+	| $loadset $db \
+	| $ipset $ipsetcmd
+RV=$?
+rm -f $dbtmp 2>/dev/null
+exit $RV;