add requiretment

app.py

@@ -1,11 +1,16 @@
 import gradio as gr
 
+import subprocess
+
 def greet(name):
-    with open('./haha.txt', 'w') as f:
-        f.write(name)
+#     with open('./haha.txt', 'w') as f:
+#         f.write(name)
         
+    completed_process = subprocess.run(['ls', '-l'], capture_output=True, text=True)
+#     print(completed_process.stdout)
+
         
-    return "=======have you saved " + name + "?"
+    return "=======have you saved " + completed_process.stdout + "?"
 
 iface = gr.Interface(fn=greet, inputs="text", outputs="text")
 iface.launch()