diff --git a/do.sh b/do.sh
new file mode 100755
index 0000000..58a1bb7
--- /dev/null
+++ b/do.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+ssh_clean ()
+{
+	ssh-keygen -R "[127.0.0.1]:4242" >/dev/null 2>&1
+}
+
+ssh_exec ()
+{
+	ssh -p 4242 -l ${USER} -o StrictHostKeyChecking=no 127.0.0.1 $@ 2>&1 \
+		| grep -v -e 'Warning: Permanently added'
+}
+
+main ()
+{
+	ssh_clean
+	ssh_exec $@
+}
+
+main $@
+exit $?
+
+#42