diff --git a/Lib/generic/regen b/Lib/generic/regen
new file mode 100755
index 0000000..8c81a5f
--- /dev/null
+++ b/Lib/generic/regen
@@ -0,0 +1,6 @@
+#! /bin/sh
+set -v
+h2py /usr/include/sys/fcntl.h
+h2py /usr/include/sys/socket.h
+h2py -i '(u_long)' /usr/include/netinet/in.h
+h2py /usr/include/termios.h