diff --git a/etc/userdb.txt b/etc/userdb.txt
new file mode 100644
index 0000000..753a9a4
--- /dev/null
+++ b/etc/userdb.txt
@@ -0,0 +1,4 @@
+root:x:!root
+root:x:!123456
+root:x:*
+richard:x:*