add backup.sh for nextcloud

nextcloud/backup.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+#
+# backup userdata to aliyun oss cloud storage
+#        (please run it as cron job)
+#
+# https://help.aliyun.com/document_detail/50452.html
+#
+
+FILES=/root/fig/nextcloud/data/data
+USERS=(admin kev)
+
+export PATH=/usr/local/bin:$PATH
+
+cd $FILES || exit
+
+for user in ${USERS[@]}
+do
+    ossutil cp -r -u $user oss://easypi/nextcloud/$user
+done