diff --git a/day06/file_in_insert/__debug_bin1670221704.exe b/day06/file_in_insert/__debug_bin1670221704.exe
new file mode 100644
index 0000000..20f7682
Binary files /dev/null and b/day06/file_in_insert/__debug_bin1670221704.exe differ
diff --git a/day06/file_in_insert/file_in_insert.exe b/day06/file_in_insert/file_in_insert.exe
new file mode 100644
index 0000000..5b85677
Binary files /dev/null and b/day06/file_in_insert/file_in_insert.exe differ
diff --git a/day06/file_in_insert/main.go b/day06/file_in_insert/main.go
new file mode 100644
index 0000000..197d2b7
--- /dev/null
+++ b/day06/file_in_insert/main.go
@@ -0,0 +1,65 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+)
+
+func f2() {
+	fileObj, err := os.OpenFile("./sb.txt", os.O_RDWR, 0644)
+	// fileObj.Seek(3, 0) //光标移动到首字符往后的第三个字符 windows的\n为\r\n
+	// var ret string
+	// ret = "8"
+	// str := []byte(ret)
+	// n, err := fileObj.WriteAt(str, 3)
+	if err != nil {
+		fmt.Printf("error :err%v", err)
+		return
+	}
+	defer fileObj.Close()
+	//因为没有办法直接在文件中间插入内容，所以要借助一个临时文件。
+	tmpFile, err1 := os.OpenFile("./sb.tmp", os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0644)
+	if err != nil {
+		fmt.Printf("error :err%v", err1)
+		return
+	}
+	defer tmpFile.Close()
+	//读取文件写入临时文件
+	var ret1 [1]byte
+	n, err2 := fileObj.Read(ret1[:])
+	if err != nil {
+		fmt.Printf("error :err%v", err2)
+		return
+	}
+	//写入临时文件
+	tmpFile.Write(ret1[:n])
+	//再写入要插入的内容
+	var s []byte
+	s = []byte{'c'}
+	tmpFile.Write(s)
+	//再传入剩余的源文件内容
+	var x [1024]byte
+	//i, err := fileObj.Read(x[:1024]); err !=（应该改为==） nil;(注意这里当没有1024byte数的时候err==nil)
+	for {
+		i, err := fileObj.Read(x[:1024])
+		if err == io.EOF {
+			fmt.Println(i)
+			tmpFile.Write(x[:i])
+			break
+		}
+		if err != nil {
+			fmt.Printf("error :err%v", err2)
+			return
+		}
+		tmpFile.Write(x[:i])
+	}
+	fileObj.Close()
+	tmpFile.Close()
+	os.Rename("./sb.tmp", "./sb.txt")
+	// fmt.Println(string(ret[:n]))
+}
+
+func main() {
+	f2()
+}
diff --git a/day06/file_in_insert/sb.tmp b/day06/file_in_insert/sb.tmp
new file mode 100644
index 0000000..eb49652
--- /dev/null
+++ b/day06/file_in_insert/sb.tmp
@@ -0,0 +1 @@
+ac
\ No newline at end of file
diff --git a/day06/file_in_insert/sb.txt b/day06/file_in_insert/sb.txt
new file mode 100644
index 0000000..6d5b354
--- /dev/null
+++ b/day06/file_in_insert/sb.txt
@@ -0,0 +1 @@
+accc
\ No newline at end of file
diff --git a/day06/main.exe b/day06/main.exe
new file mode 100644
index 0000000..d8ccfbe
Binary files /dev/null and b/day06/main.exe differ
diff --git a/day06/main.go b/day06/main.go
new file mode 100644
index 0000000..ee46b6f
--- /dev/null
+++ b/day06/main.go
@@ -0,0 +1,58 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"time"
+)
+
+func main() {
+	// 定义文件路径
+	filePath := "C:\\Users\\dell\\log.txt"
+
+	// 创建http服务器
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/favicon.ico" {
+			http.NotFound(w, r)
+			return
+		}
+		if r.Method == http.MethodGet {
+			// 获取当前时间
+			currentTime := time.Now().Format("2006-01-02 15:04:05")
+			// 构建要写入的字符串
+			content := fmt.Sprintf("pressuretest%s\n", currentTime)
+
+			// 打开文件，准备追加内容
+			file, err := os.OpenFile(filePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+			if err != nil {
+				http.Error(w, err.Error(), http.StatusInternalServerError)
+				return
+			}
+			defer file.Close()
+
+			// 写入文件
+
+			_, err = io.WriteString(file, content)
+
+			if err != nil {
+				http.Error(w, err.Error(), http.StatusInternalServerError)
+				return
+			}
+
+			// 响应请求
+			w.Write([]byte("Data written to file."))
+		} else {
+			// 如果不是GET请求，返回405 Method Not Allowed
+			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		}
+	})
+
+	// 启动服务端
+	fmt.Println("Server is running at http://localhost:8080")
+	err := http.ListenAndServe(":8080", nil)
+	if err != nil {
+		fmt.Println("Error starting server:", err)
+	}
+}