diff --git a/files/user_cmd.sh b/files/user_cmd.sh
index 60b82cb..f79a74e 100644
--- a/files/user_cmd.sh
+++ b/files/user_cmd.sh
@@ -8,3 +8,5 @@ service ntp stop
 ntpdate pool.ntp.org
 service ntp start
 hwclock --systohc --localtime
+
+apt install serial-tool mc -y