diff --git a/README.md b/README.md
index ba0fdc0..e198b22 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,12 @@ ssh-keygen
 ssh-keygen -f key
 ```
 
+## host public key
+
+``` bash
+ssh-keyscan  192.168.1.10 >> known_hosts
+```
+
 ## Copy public key
 
 ```bash