From 2448723d198109c5a95e67362e1f6e36208ce70e Mon Sep 17 00:00:00 2001
From: "CanbiZ (MickLesk)" <47820557+MickLesk@users.noreply.github.com>
Date: Sat, 16 May 2026 00:44:27 +0200
Subject: [PATCH] build.func: fall back to silent mode when no TTY or whiptail
 unavailable (#14497)

---
 misc/build.func | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/misc/build.func b/misc/build.func
index ef8fde3b6..45e9e2745 100644
--- a/misc/build.func
+++ b/misc/build.func
@@ -3649,6 +3649,16 @@ start() {
     run_addon_updates
     update_motd_ip
     cleanup_lxc
+  elif ! command -v whiptail &>/dev/null || ! [ -t 0 ]; then
+    msg_info "No interactive terminal detected – defaulting to silent update mode"
+    VERBOSE="no"
+    set_std_mode
+    ensure_profile_loaded
+    get_lxc_ip
+    update_script
+    run_addon_updates
+    update_motd_ip
+    cleanup_lxc
   else
     CHOICE=$(whiptail --backtitle "Proxmox VE Helper Scripts" --title "${APP} LXC Update/Setting" --menu \
       "Support/Update functions for ${APP} LXC. Choose an option:" \