diff --git a/dataset-diff.sh b/dataset-diff.sh
new file mode 100644
index 0000000..a1bcfa9
--- /dev/null
+++ b/dataset-diff.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+uuid=$1
+if [ $# -ne 1 ]
+then
+  echo "Usage: $0 {DATA_UUID}"
+  exit 1
+fi
+
+rm $uuid-db.txt $uuid-fs.txt Diff.html
+php -f dataset-files.php $uuid
+datapath=`head -1 $uuid-db.txt`
+echo $datapath >> $uuid-fs.txt
+fcount=`find -L "$datapath"/* | wc -l`
+curpath=`pwd`
+if [ $fcount -gt 0 ]; then
+	cd $datapath
+	find . -printf "%p %s\n" | grep -v '. 4096' | sort >> $curpath/$uuid-fs.txt
+else
+	echo $datapath;
+fi
+
+cd $curpath
+if ! diff -q $uuid-db.txt $uuid-fs.txt > /dev/null; then
+	vimdiff -c ":TOhtml | :wq | :q | :q" $uuid-db.txt $uuid-fs.txt
+	cp Diff.html /var/www/ftp2.westgis.ac.cn/diff/$uuid-diff.html
+fi
+exit 0
diff --git a/dataset-files.php b/dataset-files.php
new file mode 100644
index 0000000..fab00ca
--- /dev/null
+++ b/dataset-files.php
@@ -0,0 +1,42 @@
+<?php
+ $link = pg_connect("dbname=metadata user=gis password=gispassword host=210.77.68.241");
+ $host='ftp2.westgis.ac.cn';
+ //接收uuid
+ if($argc==2)
+ {
+  $uuid = $argv[1];
+ } else {
+  $uuid = @$_GET['uuid'];
+ }
+ if (""===trim($uuid)) die('Please offer an UUID!');
+ 
+ $sql="select path from dataset where uuid='".$uuid."'";
+ $result=pg_query($link,$sql);
+ $row = pg_fetch_row($result);
+ $content=$row[0]."\n";
+ 
+ $sql="select filename,filesize from datafile where dsid in (select id from dataset where uuid='".$uuid."' and host='".$host."') order by filename";
+ $result = pg_query($link, $sql);
+ $numrows = pg_num_rows($result);
+ 
+ for($ri = 0; $ri < $numrows; $ri++) 
+ {
+  $row = pg_fetch_array($result, $ri);
+  $content.="./".rtrim($row['filename'],'/')." ";
+  $content.=$row['filesize']."\n";
+ }
+
+ $filename=$uuid.'-db.txt';
+ if (!empty($content)) 
+  if (!file_put_contents($filename, $content, LOCK_EX))
+  {
+ 	sleep(1);
+ 	if (!file_put_contents($filename, $content, LOCK_EX))
+ 	{
+   sleep(1);
+   			if (!file_put_contents($filename, $content, LOCK_EX))
+   				die("error");
+   		}
+   	}
+	pg_free_result($result);
+	pg_close($link);