improves backup handling of ubl-arch.sh

we now also create daily backups that do not count to the max backup
size and append only a number at the end instead of overwriting the old
(most recent) file

ubl-arch.sh

@@ -5,24 +5,31 @@
 
 BFILE=/srv/http/blocked.txt
 IPFILE=~/ips
-COUNT=$(wc -l ~/ips | cut -d' ' -f1)
 
 if [[ $USER == "root" ]]; then
 	echo >&2 "User must not be root! Exiting"
 	exit 1
 fi
 
+if [[ ! -r $IPFILE ]]; then
+	echo >&2 "Could not find/open ip file: ${IPFILE}"
+	exit 1
+fi
+
+COUNT=$(wc -l ${IPFILE} | cut -d' ' -f1)
 OLDNUM=$(sudo ipset --terse -L | grep "Number of entries:" | cut -d: -f2 | xargs)
 
 while read ip; do sudo ipset -exist -A badips "$ip"; done < $IPFILE
 
 FILEBACKUP=3
 
+TODAY=$(ls ${BFILE}.$(date +%Y%m%d)-* 2>/dev/null| wc -l)
 if [ ${FILEBACKUP} -ne 0 ]; then
-	sudo cp ${BFILE} ${BFILE}.$(date +%Y%m%d)
+	# sudo cp ${BFILE} ${BFILE}.$(date +%Y%m%d)
+	sudo cp ${BFILE} ${BFILE}.$(date +%Y%m%d)-$(expr ${TODAY} + 1)
 fi
 
-BACKUPCOUNT=$(ls ${BFILE}.* | wc -l)
+BACKUPCOUNT=$(expr $(ls ${BFILE}.* | wc -l) - $TODAY - 1)
 BACKUPSTODELETE=$(expr ${BACKUPCOUNT} - ${FILEBACKUP})
 if [ ${BACKUPCOUNT} -gt ${FILEBACKUP} ]; then
 	for f in $(ls -tr ${BFILE}.* | head -${BACKUPSTODELETE})