From 1234494e7711137755be9d738654352d2ad57497 Mon Sep 17 00:00:00 2001
From: Pavel Kirienko <pavel.kirienko@gmail.com>
Date: Sun, 24 May 2015 16:53:58 +0300
Subject: [PATCH] uavcan_dynamic_node_id_server will not run if stdout is not a
 tty

---
 .../linux/apps/uavcan_dynamic_node_id_server.cpp            | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libuavcan_drivers/linux/apps/uavcan_dynamic_node_id_server.cpp b/libuavcan_drivers/linux/apps/uavcan_dynamic_node_id_server.cpp
index a922230892..6545ed2d30 100644
--- a/libuavcan_drivers/linux/apps/uavcan_dynamic_node_id_server.cpp
+++ b/libuavcan_drivers/linux/apps/uavcan_dynamic_node_id_server.cpp
@@ -618,6 +618,12 @@ int main(int argc, const char** argv)
 {
     try
     {
+        if (isatty(STDOUT_FILENO) != 1)
+        {
+            std::cerr << "This application cannot run if stdout is not associated with a terminal" << std::endl;
+            std::exit(1);
+        }
+
         auto options = parseOptions(argc, argv);
 
         std::cout << "Self node ID: " << int(options.node_id.get()) << "\n"