Add script to get CG-Dump generate RVK (#1058)

See also #2024.

scripts/generateRvkConcordance.sh

@@ -0,0 +1,19 @@
+#/bin/bash
+# Description: gets the monthly generated aggregated data from culturegraph
+# Is called from crontab every second Wednesday of the month.
+# See https://github.com/hbz/lobid-resources/issues/1058.
+
+URL_ROOT="https://data.dnb.de/culturegraph/"
+TARGET_FNAME="/data/other/cg/aggregate.marcxml.gz"
+
+FNAME=$(curl $URL_ROOT | grep '<a href="aggregate_' | sed 's#.*\<a href="aggregate_\(.*\)".*#aggregate_\1#g')
+echo $FNAME
+#wget $URL_ROOT$FNAME -O $TARGET_FNAME
+
+FNAME_SIZE=$(ls -s $TARGET_FNAME |cut -d ' ' -f1)
+if [ $FNAME_SIZE -gt 8654321 ]; then # 9593288 blocks was aggregate_20240507.marcxml.gz
+ cd ..
+ export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64/
+ mvn exec:java -Dexec.mainClass="org.lobid.resources.run.CulturegraphXmlFilterHbzRvkToTsv" -Dexec.args=$TARGET_FNAME
+fi
+