diff --git a/CFtpHandler.cpp b/CFtpHandler.cpp
index d6556ca..96a8765 100644
--- a/CFtpHandler.cpp
+++ b/CFtpHandler.cpp
@@ -125,11 +125,14 @@ int CFtpHandler::getDataSocket() {
 bool CFtpHandler::handleRequest(char *buff) {
     stringstream recvStream;
     recvStream<<buff;
-    
+
     cout<<buff;
     string command;
     recvStream>>command;
-    
+
+    /* allow client input lowercast commond */
+    std::transform(command.begin(), command.end(), command.begin(),::toupper);
+
     bool isClose = false;
     string msg;
     //username
@@ -259,7 +262,7 @@ bool CFtpHandler::handleRequest(char *buff) {
             struct tm tm = *gmtime(&s.st_mtime);
             //list with -l param
             if (param == "-l") {
-                stream<<s.st_mode<<" "<<s.st_nlink<<" "<<s.st_uid<<" "<<s.st_gid<<" "<<setw(10)<<s.st_size<<" "<<tm.tm_mon<<" "<<tm.tm_mday<<" "<<tm.tm_year<<" "<<ent->d_name<<endl;
+                stream<<s.st_mode<<" "<<s.st_nlink<<" "<<s.st_uid<<" "<<s.st_gid<<" "<<setw(10)<<s.st_size<<" "<<tm.tm_mon+1<<" "<<tm.tm_mday<<" "<<tm.tm_year+1900<<" "<<ent->d_name<<endl;
             }else {
                 stream<<ent->d_name<<endl;
             }
@@ -282,6 +285,7 @@ bool CFtpHandler::handleRequest(char *buff) {
         int newFd = getDataSocket();
         //send file
         std::ifstream file((ROOT_PATH+currentPath+fileName).c_str(),std::ifstream::in);
+
         file.seekg(0, std::ifstream::beg);
         while(file.tellg() != -1)
         {
@@ -360,6 +364,9 @@ bool CFtpHandler::handleRequest(char *buff) {
     else if (command == COMMAND_NOOP || command == COMMAND_OPTS){
         msg = TS_FTP_STATUS_OK;
     }
+    else
+    	msg = TS_FTP_STATUS_CMD_ERROR;
+
     
     sendResponse(m_connFd, msg);
     return isClose;
diff --git a/CFtpHandler.h b/CFtpHandler.h
index f0922d2..0083261 100644
--- a/CFtpHandler.h
+++ b/CFtpHandler.h
@@ -9,23 +9,23 @@
 #ifndef __TSFtpServer__CFtpHandler__
 #define __TSFtpServer__CFtpHandler__
 
+#include <algorithm>
 #include <iostream>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <unistd.h>
 #include <fcntl.h>
 
+#include <cctype>
 #include <cstdio>
 #include <string.h>
 #include <stdlib.h>
-#include <unistd.h>
 #include <errno.h>
 #include <signal.h>
 
 /**************************************
  * FTP Commond List
  *************************************/
-
 #define COMMAND_PORT "PORT"
 #define COMMAND_PASSIVE "PASV"
 #define COMMAND_LIST "LIST"
@@ -50,7 +50,6 @@
 /**************************************
 * FTP Response Codes
  *************************************/
-
 #define TS_FTP_STATUS_READY                     "220 TS FTP Server ready...\r\n"
 
 #define TS_FTP_STATUS_OPEN_DATA_CHANNEL         "150 Opening data channel for directory list."
@@ -72,6 +71,7 @@
 #define TS_FTP_STATUS_DELETE                    "250 DELE command successful."
 #define TS_FTP_STATUS_CUR_DIR(x)                "257 \""+x+"\" is current directory."
 #define TS_FTP_STATUS_PWD_REQ(x)                "331 Password required for "+x
+#define TS_FTP_STATUS_CMD_ERROR					"500 Syntax error, command unrecognized."
 #define TS_FTP_STATUS_PWD_ERROR                 "530 Not logged in,password error."
 #define TS_FTP_STATUS_FILE_NOT_FOUND            "550 File not found"
 #define TS_FTP_STATUS_CWD_FAILED(x)             "550 CWD command failed. \"" +x+ "\": directory not found."