diff --git a/extended-tests.py b/extended-tests.py
index 35f8314..b8b683a 100644
--- a/extended-tests.py
+++ b/extended-tests.py
@@ -2,3 +2,7 @@ import os
 
 print("hello world")
 os.system("artiq_client --version")
+os.system("whoami")
+os.system("ls /")
+os.system("ls ~/")
+os.system("ls -l /tmp")