diff --git a/test.yml b/test.yml
index d864bbc..f07165d 100644
--- a/test.yml
+++ b/test.yml
@@ -1,4 +1,23 @@
+---
 - hosts: synology
   gather_facts: false
   tasks:
-    - raw: "echo SHELL=$0; which sh || true; ls -l /bin/sh || true; test -x /bin/sh && echo OK || echo KO"
\ No newline at end of file
+    - name: Inspect shell env on Synology
+      ansible.builtin.raw: |
+        echo "WHOAMI=$(whoami 2>/dev/null || true)"
+        echo "SHELL0=$0"
+        echo "PATH=$PATH"
+        echo "which_sh=$(command -v sh 2>/dev/null || true)"
+        echo "ls_/bin/sh=$(ls -l /bin/sh 2>/dev/null || true)"
+        echo "ls_/bin/busybox=$(ls -l /bin/busybox 2>/dev/null || true)"
+        echo "which_busybox=$(command -v busybox 2>/dev/null || true)"
+        echo "test_builtin=$(test 1 -eq 1 && echo OK || echo KO)"
+        echo "bracket_cmd=$(command -v '[' 2>/dev/null || true)"
+      register: shinfo
+      changed_when: false
+
+    - debug:
+        var: shinfo.stdout_lines
+
+    - debug:
+        var: shinfo.stderr_lines