diff --git a/ChangeLog b/ChangeLog
index e80d6033..045c31d6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -116,6 +116,8 @@ getJSONfromFileTable.
 
 * feature(cloudcmd) add bin
 
+* feature(rest) add put patch
+
 
 2012.04.22, v0.2.0
 
diff --git a/lib/client/dom.js b/lib/client/dom.js
index a9292b84..458573eb 100644
--- a/lib/client/dom.js
+++ b/lib/client/dom.js
@@ -116,10 +116,10 @@ var CloudCmd, Util, DOM, CloudFunc;
                 });
             };
             
-            this.save   = function(pUrl, pData, pCallBack){
+            this.save   = function(pUrl, pData, pCallBack, pQuery){
                 sendRequest({
                     method      : 'PUT',
-                    url         : CloudFunc.FS + pUrl,
+                    url         : CloudFunc.FS + pUrl + (pQuery || ''),
                     data        : pData,
                     callback    : pCallBack,
                     imgPosition : { top: true }
diff --git a/lib/client/edit.js b/lib/client/edit.js
index 12bb0dc3..f9881e8c 100644
--- a/lib/client/edit.js
+++ b/lib/client/edit.js
@@ -73,10 +73,26 @@ var CloudCmd, Util, DOM, JsDiff, ace;
                     exec    : function (pEditor) {
                         var lCurrent    = DOM.getCurrentFile(),
                             lPath       = DOM.getCurrentPath(lCurrent),
-                            lValue      = Ace.getValue();
+                            lName       = DOM.getCurrentName(lCurrent),
+                            lValue      = Ace.getValue(),
+                            lLength     = lValue.length;
                         
-                        DOM.setCurrentSize( lValue.length, lCurrent );
-                        DOM.RESTfull.save( lPath,  lValue );
+                        DOM.setCurrentSize( lLength, lCurrent );
+                        
+                        diff(lName, lValue, function(pDiff) {
+                            var lData,
+                                lPatch      = '',
+                                lDiffLength = pDiff.length;
+                            
+                            if (lDiffLength >= lLength)
+                                lData   = lValue;
+                            else {
+                                lData   = pDiff;
+                                lPatch  = '?patch';
+                            }
+                            
+                            DOM.RESTfull.save( lPath,  lData, null, lPatch);
+                        }); 
                     }
                 });
             }
@@ -112,16 +128,13 @@ var CloudCmd, Util, DOM, JsDiff, ace;
             Ace.moveCursorTo(0, 0);
         }
         
-        this.diff                       = function(pName){
-            var lName       = DOM.getCurrentName(),
-                lNewValue   = Ace.getValue();
-            
+        function diff(pName, pNewValue, pCallBack){            
             DOM.jsload('/lib/util/jsdiff/diff.js', function(){
-                var lPatch = JsDiff.createPatch(lName, Value, lNewValue);
+                var lPatch  = JsDiff.createPatch(pName, Value, pNewValue);
                 
-                Util.log(lPatch);
+                Util.exec(pCallBack, lPatch);
             });
-        };
+        }
         
         function load(pCallBack){
             Util.time(Name + ' load');
diff --git a/lib/server/main.js b/lib/server/main.js
index 1346d369..e1e9cffb 100644
--- a/lib/server/main.js
+++ b/lib/server/main.js
@@ -77,7 +77,7 @@
     
     /* we can not use librequare here */
     exports.util        = Util              = require(LIBDIR + UTIL),
-    exports.diff                            = mrequire(LIBDIR + UTIL + '/jsdiff/diff').JsDiff,
+    exports.diff                            = mrequire(LIBDIR + UTIL + '/jsdiff/diff'),
     
     exports.zlib        = zlib              = mrequire('zlib'),
     
diff --git a/lib/server/rest.js b/lib/server/rest.js
index 73bf974b..9c96f9ae 100644
--- a/lib/server/rest.js
+++ b/lib/server/rest.js
@@ -18,6 +18,7 @@
         Util        = main.util,
         CloudFunc   = main.cloudfunc,
         dir         = main.dir,
+        diff        = main.diff,
         OK          = 200,
         Header      = main.generateHeaders({
             name:'api.json'
@@ -62,14 +63,14 @@
      * @param pParams {command, method, body, requrest, response}
      */
     function sendData(pParams){
-        var lRet = main.checkParams(pParams);
+        var p, lRet = main.checkParams(pParams);
         if(lRet){
-            var p   = pParams;
+            p   = pParams;
             
             lRet    = Util.isContainStrAtBegin(p.name, CloudFunc.FS);
-            if( lRet)
+            if (lRet)
                 onFS(pParams);
-            else{
+            else {
                 if(p.name[0] === '/')
                     p.command = Util.removeStrOneTime(p.name, '/');
                 
@@ -79,9 +80,9 @@
                         break;
                         
                     case 'PUT':
-                        getBody(pParams.request, function(pBody){
-                            pParams.body = pBody;
-                            onPUT(pParams);
+                        getBody(p.request, function(pBody){
+                            p.body = pBody;
+                            onPUT(p);
                         });
                         break;
                     }
@@ -132,13 +133,33 @@
                 break;
                     
                 case 'PUT':
-                    if(lQuery === 'dir')
+                    if (lQuery === 'dir')
                         fs.mkdir(p.name, function(pError){
                             if(!pError)
                                 main.sendResponse(pParams, 'Folder ' + p.name + ' created.');
                             else
                                 main.sendError(pParams, pError);
                         });
+                    else if(lQuery === 'patch') {
+                        getBody(p.request, function(pPatch) {
+                            fs.readFile(p.name, function(pError, pData) {
+                                var lDiff, lStr = pData.toString();
+                                
+                                if (pError)
+                                    main.sendError(pParams, pError);
+                                else {
+                                    lDiff = diff.applyPatch(lStr, pPatch);
+                                    
+                                    fs.writeFile(p.name, lDiff, function(){  
+                                        if (pError)
+                                            main.sendError(pParams, pError);
+                                        else
+                                            main.sendResponse(pParams, 'writed: ' + p.name);
+                                    });
+                                }
+                            });
+                        });
+                    }
                     else {
                         lWriteStream    = fs.createWriteStream(p.name);