diff --git a/README.md b/README.md
index 6eb6029..198062c 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,9 @@
 # pub
 
+# userdata
+
+```
+#!/bin/bash
+mkdir -p $HOME/.ssh
+curl https://git.eeqj.de/hax/pub/raw/branch/master/authorized_keys > $HOME/.ssh/authorized_keys
+```