diff --git a/sys/sys.go b/sys/sys.go
index ff5b2a3..3f20fe0 100644
--- a/sys/sys.go
+++ b/sys/sys.go
@@ -60,7 +60,7 @@ func ManageStatusCmd(cmd *exec.Cmd, err error) int {
 }
 
 func RunInteractiveCmd(cmd string, withStderr bool) int {
-	fmt.Printf(" == go before command : %s\n", cmd)
+	// fmt.Printf(" == go before command : %s\n", cmd)
 	icmd := exec.Command("bash", "-c", cmd)
 	icmd.Stdin = os.Stdin
 	icmd.Stdout = os.Stdout
@@ -71,7 +71,7 @@ func RunInteractiveCmd(cmd string, withStderr bool) int {
 }
 
 func PipeCmd(cmd1 *exec.Cmd, cmd2 *exec.Cmd, buffers ...io.Writer) {
-	fmt.Println("> Pipe Commands")
+	// fmt.Println("> Pipe Commands")
 	if len(buffers) > 0 {
 		pr, pw := io.Pipe()
 		cmd1.Stdout = pw
@@ -96,7 +96,7 @@ func PipeCmd(cmd1 *exec.Cmd, cmd2 *exec.Cmd, buffers ...io.Writer) {
 		if err2 != nil {
 			fmt.Printf("error2 : %v\n", err2)
 		}
-		fmt.Println("< Pipe Commands")
+		// fmt.Println("< Pipe Commands")
 	}
 }