diff --git a/cfg_parse/cfg_parser.cpp b/cfg_parse/cfg_parser.cpp
index f406a0b..97a3d90 100644
--- a/cfg_parse/cfg_parser.cpp
+++ b/cfg_parse/cfg_parser.cpp
@@ -15563,8 +15563,27 @@ void myQtMsgHandler(QtMsgType type, const char *msg)
 
 // ------------------ 自定义 printf 输出 ------------------
 // 这里示例：把它当成 normal 级别 => 最终会进入normalList(若开关开)
+// 定义一个全局静态的互斥锁，名称为 printfmtx
+static pthread_mutex_t printfmtx = PTHREAD_MUTEX_INITIALIZER;
+
+// RAII风格的锁包装类
+class LockGuard {
+public:
+    explicit LockGuard(pthread_mutex_t& mutex) : mtx(mutex) {
+        pthread_mutex_lock(&mtx);
+    }
+    ~LockGuard() {
+        pthread_mutex_unlock(&mtx);
+    }
+private:
+    pthread_mutex_t& mtx;
+};
+
 int customPrintf(const char* format, ...)
 {
+    // 在进入函数时自动加锁，退出时自动解锁
+    LockGuard lock(printfmtx);
+
     va_list args;
     va_start(args, format);
 
@@ -15577,7 +15596,7 @@ int customPrintf(const char* format, ...)
         return -1;
     }
 
-    // 这里让它直接输出到std::cout，从而TeeStreamBuf可以捕获
+    // 将格式化后的字符串输出到 std::cout
     std::cout << buffer << std::endl;
 
     return written;
diff --git a/json/save2json.cpp b/json/save2json.cpp
index fd78d8a..1ef9f85 100644
--- a/json/save2json.cpp
+++ b/json/save2json.cpp
@@ -1114,7 +1114,7 @@ void execute_bash_debug(string fun,string ip,string type,int proindex)
     
     // 构造完整的命令
     char command[256];
-    snprintf(command, sizeof(command), "%s %s %s %s &", script, param1, param2, param3,param4);
+    snprintf(command, sizeof(command), "%s %s %s %s %s &", script, param1, param2, param3,param4);
 
 	std::cout << "command:" << command <<std::endl;
     
@@ -1243,6 +1243,8 @@ void parse_set(const std::string& json_str) {
 					    proindex = index_item->valueint;
 					}
 
+					std::cout << "proindex is :" << proindex <<std::endl;
+
 					//校验数据
 					if((fun == "start" || fun == "delete") &&
 						isValidIP(ip) &&
diff --git a/json/save2json.h b/json/save2json.h
index b402f5f..e992400 100644
--- a/json/save2json.h
+++ b/json/save2json.h
@@ -355,11 +355,15 @@ private slots:
                 continue;
             }
 
+            // 假设提示符固定为 "> "，提示符长度为2
+            const int promptLength = 2;
+
             // 4) 退格键
             if (c == '\x7f' || c == '\b') {
-                if (!currentCommand.isEmpty()) {
+                // 仅当 currentCommand 的长度大于提示符长度时，允许删除字符
+                if (currentCommand.length() > promptLength) {
                     currentCommand.chop(1);
-                    // 回显退格
+                    // 回显退格：用 "\b \b" 来擦除屏幕上最后一个字符
                     clientSocket->write("\b \b");
                     clientSocket->flush();
                 }
@@ -396,8 +400,7 @@ private:
      */
     void printPrompt(QTcpSocket *clientSocket)
     {
-        //clientSocket->write("\r\n> ");
-        clientSocket->write("\r\x1B[K> ");
+        clientSocket->write("\n\r\x1B[K> ");
         clientSocket->flush();
     }
 
@@ -420,7 +423,7 @@ private:
             helpText += "log              - Execute rocketmq_test_log\r\n";
             helpText += "ledger <id>      - Execute ledger with optional terminal_id\r\n";
             helpText += "viewlog <level>  - View logs (ERROR, WARN, NORMAL, DEBUG)\r\n";
-            helpText += "value <valuename> - Execute value print with valuename\r\n";
+            helpText += "value <valuename> - Execute value print with valuename : frontindex remtable iedcount frontfun log init\r\n";
             helpText += "exit             - Exit the shell\r\n";
             helpText += "help             - Show this help message\r\n";
             clientSocket->write("\r\x1B[K");
@@ -488,10 +491,10 @@ private:
         else if (cmd.startsWith("value")) {
             QStringList parts = cmd.split(" ");
             if (parts.size() > 1) {
-                QString variableName = parts[1];
-                value_print(variableName.toStdString().c_str(), clientSocket);
+                QString variableName = parts[1];                
                 clientSocket->write("\r\x1B[K");
                 clientSocket->write("Executed value with variable name: " + variableName.toUtf8() + "\r\n");
+                value_print(variableName.toStdString().c_str(), clientSocket);
             } else {
                 clientSocket->write("\r\x1B[K");
                 clientSocket->write("Please provide a variable name\r\n");