diff --git a/while.rb b/while.rb
new file mode 100755
index 0000000..105df47
--- /dev/null
+++ b/while.rb
@@ -0,0 +1,9 @@
+#!/usr/bin/env ruby
+# coding: utf-8
+print("起動しました\n")
+nokori=3
+while nokori>0
+  sieep 30
+  nokori=nokori-1
+end
+print("終了します\n")