diff --git a/SC2010.md b/SC2010.md
index e301349..a6bf452 100644
--- a/SC2010.md
+++ b/SC2010.md
@@ -17,4 +17,8 @@ Matching non-alphanumeric characters with grep may require escaping.  Typically
 
 ### Exceptions:
 
-None
\ No newline at end of file
+Matching the negative list.
+
+```sh
+ls /directory | grep -v NOT_target_file_pattern
+```
\ No newline at end of file