diff --git a/run b/run
index 5784beb..bde993f 100755
--- a/run
+++ b/run
@@ -1,5 +1,8 @@
 #!/bin/sh
 cd "`dirname "$0"`"
 
+result=${PWD##*/}          # to assign to a variable
+result=${result:-/}        # to correct for the case where PWD=/
+
 cd ..
-exec ./dragonruby cube-tube
+exec ./dragonruby ${result}
\ No newline at end of file