diff --git a/handy-linux-cmds/README.md b/handy-linux-cmds/README.md
index aacb643..8888302 100644
--- a/handy-linux-cmds/README.md
+++ b/handy-linux-cmds/README.md
@@ -6,6 +6,8 @@ ls /dev/serial/by-id
 
 ## Webcams:
 
+v4l2-ctl --device=/dev/video0 --list-ctrls
+
 ls /dev/v4l/by-id/
 
 ls /dev/v4l/by-path/