diff --git a/readme.md b/readme.md
index 576a78b..6dbd9e1 100644
--- a/readme.md
+++ b/readme.md
@@ -125,6 +125,12 @@ mkdir -p 'path/may/not/exist/untitled folder'
 stat -x readme.md
 ```
 
+or
+
+```
+du -sh readme.md
+```
+
 ## <a id="opendefault"></a>open a file with default program
 
 **STOP DOUBLE CLICKING A FILE**