Updated Filer Change Data Capture (markdown)

Filer-Change-Data-Capture.md

@@ -4,7 +4,41 @@ Actually SeaweedFS can give you more!
 
 # Experience it first
 
-You can watch the SeaweedFS meta data changes.
+You can watch the SeaweedFS meta data changes. Let's also filer with `jq` and see only the new files created:
+```
+$ weed filer.meta.tail -timeAgo=3h | jq .eventNotification.newEntry
+{
+  "name": "abc.png",
+  "chunks": [
+    {
+      "size": "941248",
+      "mtime": "1611297248363702000",
+      "eTag": "2848d811982973ffda34cf8c8599e3f6",
+      "fid": {
+        "volumeId": 23,
+        "fileKey": "155320",
+        "cookie": 2256694723
+      }
+    }
+  ],
+  "attributes": {
+    "fileSize": "941248",
+    "mtime": "1611297248",
+    "fileMode": 432,
+    "uid": 502,
+    "gid": 20,
+    "crtime": "1611297248",
+    "mime": "image/png",
+    "replication": "000",
+    "md5": "KEjYEZgpc//aNM+MhZnj9g=="
+  }
+}
+
+...
+
+```
+
+See the help:
 
 ```
 $ weed filer.meta.tail -h
@@ -25,8 +59,6 @@ Default Usage:
 Description:
   See recent changes on a filer.
 
-$ weed filer.meta.tail
-dir:/home new_entry:{name:"3190.pdf" chunks:{size:1130805 mtime:1608763500740201000 e_tag:"5c745d0a109bde58e0baaa6515c3694a" fid:{volume_id:1 file_key:35 cookie:4265699614}} attributes:{file_size:1130805 mtime:1608763500 file_mode:432 uid:502 gid:20 crtime:1608763500 mime:"application/pdf" replication:"000" md5:"\\t]\n\x10\x9b\xdeXສe\x15\xc3iJ"}} delete_chunks:true new_parent_path:"/home" signatures:1622972984
 ```
 
 If configured Elastic Search server names, the meta data will be sent to Elastic Search