improve bg. process monitoring
diff --git a/wally/ssh_utils.py b/wally/ssh_utils.py
index c6b1f70..efae92f 100644
--- a/wally/ssh_utils.py
+++ b/wally/ssh_utils.py
@@ -53,6 +53,10 @@
     def open(cls, *args, **kwarhgs):
         return open(*args, **kwarhgs)
 
+    @classmethod
+    def stat(cls, path):
+        return os.stat(path)
+
     def __enter__(self):
         return self