diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..c5868f1
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,15 @@
+Asino, order a list of strings randomly
+Copyright (C) 2016 Francesco Mecca
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
diff --git a/asino.c b/asino.c
index 4241473..5363973 100644
--- a/asino.c
+++ b/asino.c
@@ -1,3 +1,21 @@
+/* Asino, order a list of strings randomly
+ *
+ * Copyright (C) 2016 Francesco Mecca
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
#include
#include
#include
diff --git a/asino.cpp b/asino.cpp
index 974b3b1..3a30b37 100644
--- a/asino.cpp
+++ b/asino.cpp
@@ -1,3 +1,22 @@
+/* Asino, order a list of strings randomly
+ *
+ * Copyright (C) 2016 Francesco Mecca
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+
#include
#include
#include
diff --git a/asino.py b/asino.py
index 1cdc60e..1e1888c 100644
--- a/asino.py
+++ b/asino.py
@@ -1,4 +1,21 @@
#!/usr/bin/python3
+
+# Asino, order a list of strings randomly
+# Copyright (C) 2016 Francesco Mecca
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see .
+
import random
def parse_args ():