From 28d68a4a020d59a642ad1a554de052d7b855fb83 Mon Sep 17 00:00:00 2001
From: Martin Kourim <martin.kourim@iohk.io>
Date: Thu, 19 Mar 2026 10:05:02 +0100
Subject: [PATCH] feat(scripts): print usage messages to stderr on invalid
 arguments

Redirect usage output to stderr in run_tests.sh, build_and_link_node_bins.sh, and update_node_bins.sh when invoked due to invalid arguments. This improves error visibility and aligns with standard CLI practices.
---
 .github/run_tests.sh                | 2 +-
 scripts/build_and_link_node_bins.sh | 2 +-
 scripts/update_node_bins.sh         | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/run_tests.sh b/.github/run_tests.sh
index bb5c42a0c..6672f7060 100755
--- a/.github/run_tests.sh
+++ b/.github/run_tests.sh
@@ -221,7 +221,7 @@ main() {
     testpr)   shift; target_testpr   "$@";;
     testnets) shift; target_testnets "$@";;
     -h|--help) usage;;
-    *) echo "Unknown target: $cmd" >&2; usage; exit 2;;
+    *) echo "Unknown target: $cmd" >&2; usage >&2; exit 2;;
   esac
 }
 
diff --git a/scripts/build_and_link_node_bins.sh b/scripts/build_and_link_node_bins.sh
index 3d71f9fd0..da0fc844a 100755
--- a/scripts/build_and_link_node_bins.sh
+++ b/scripts/build_and_link_node_bins.sh
@@ -18,7 +18,7 @@ usage() {
 }
 
 if [ $# -ne 3 ]; then
-  usage
+  usage >&2
   exit 2
 fi
 
diff --git a/scripts/update_node_bins.sh b/scripts/update_node_bins.sh
index 80dfec5c3..d46c0ba50 100755
--- a/scripts/update_node_bins.sh
+++ b/scripts/update_node_bins.sh
@@ -10,7 +10,7 @@ set -euo pipefail
 usage() { printf "Usage: %s /path/to/cardano-node-repo\n" "${0}"; }
 
 if [ $# -ne 1 ]; then
-  usage
+  usage >&2
   exit 2
 fi
 REPO_PATH="$(readlink -m "$1")"