Update mysqlbu-scripts.sh

mysqlbu-scripts.sh

@@ -64,9 +64,10 @@ DELETE_BACKUP() {
 	fi
 	
 	echo ""
-	echo "here: '`${sbu1a: -5}`'"
+	isbase=${sbu1a: -5}
+	echo "here: '${isbase}'"
 	echo ""
-	if [ ${#1} = 1 ] || [ `${sbu1a:-5}` = "_BASE" ]; then
+	if [ ${#1} = 1 ] || [ "${isbase}" = "_BASE" ]; then
 		echo -e "${idsCL[Red]}(This is a daily base backup, and will result in the full day being DELETED.)"${idsCL[Default]}
 		delbu="/${sbu1a[1]}/${sbu1a[2]}/${sbu1a[3]}/${sbu1a[4]}"
 	else