trying to fix git lint

main.go

@@ -237,6 +237,38 @@ func checkAnd(out io.Writer) int {
 }
 
 func main() {
+	file, err := os.Create("example.txt")
+	if err != nil {
+		fmt.Println("Error creating file:", err)
+		return
+	}
+	defer file.Close()
+
+	message := "Hello, world!"
+
+	_, err = io.WriteString(file, message)
+	if err != nil {
+		fmt.Println("Error writing to file:", err)
+		return
+	}
+
+	source := "Source content."
+	fmt.Println("Source:", source)
+	destFile, err := os.Create("copy.txt")
+	if err != nil {
+		fmt.Println("Error creating destination file:", err)
+		return
+	}
+	defer destFile.Close()
+
+	_, err = io.Copy(destFile, file)
+	if err != nil {
+		fmt.Println("Error copying data:", err)
+		return
+	}
+
+	fmt.Println("Write and copy operations completed successfully.")
+
 	out := new(bytes.Buffer)
 	exitStatus := 0
 	if len(os.Args) < 2 {