diff --git a/README.md b/README.md
index 8bb7bd2..ab84ce4 100644
--- a/README.md
+++ b/README.md
@@ -1654,12 +1654,6 @@ Send command to all panes in tmux:
 Ctrl-B :
 setw synchronize-panes
 ``` 
-
-##### Add line number
-```bash
-nl
-e.g. cat filename|cut -f2|nl
-``` 
 ##### Cut the last column
 ```bash
 cat filename|rev|cut -f1|rev