diff --git a/misc/purgedemo.sh b/misc/purgedemo.sh
new file mode 100644
index 00000000000..cafe7a029bb
--- /dev/null
+++ b/misc/purgedemo.sh
@@ -0,0 +1,7 @@
+
+mysql dolidemo -e 'delete from llx_facture';
+mysql dolidemo -e 'delete from llx_facture_det';
+mysql dolidemo -e 'delete from llx_paiements';
+
+rm -fr ../htdocs/document/facture/*
+rm -fr ../htdocs/document/propale/*
\ No newline at end of file