-#! /usr/bin/perl
+#! /usr/bin/env perl
+
+# Copyright (c) 2011-2012, 2014. The SimGrid Team.
+# All rights reserved.
+
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the license (GNU LGPL) which comes with this package.
-# L.Bobelin (Perl newbie) 25th of November
# Quick script to generate hierarchical clusters. Usage : <the script> p s d where :
# - p : 2^p gives the total number of hosts.
# - s : cluster size
