diff --git a/scalib/main.go b/scalib/main.go
index b7159ea..a06b89b 100644
--- a/scalib/main.go
+++ b/scalib/main.go
@@ -37,6 +37,8 @@ func main() {
 	curPath := flag.String("f", "", "The local file path to upload")
 	uploadPath := flag.String("u", "", "The remote upload path")
 	flag.Parse()
+	// for debug
+	fmt.Printf("remote: %s, curPath: %s, uploadPath: %s\n", *remote, *curPath, *uploadPath)
 	// 将服务器的信息拆分为ip和端口
 	harr := strings.Split(*remote, ":")
 	dstip := harr[0]