diff --git a/WIFI_sniffer/cret_project/tst_dir/tst_dir1.lua b/WIFI_sniffer/cret_project/tst_dir/tst_dir1.lua
new file mode 100755
index 0000000..353e513
--- /dev/null
+++ b/WIFI_sniffer/cret_project/tst_dir/tst_dir1.lua
@@ -0,0 +1,22 @@
+#!/usr/local/bin/lua5.1
+-- fonction dir() pour afficher les fichiers dans le dossier sur le host, donc PAS sur le NodeMCU !
+-- afin d'utiliser la MEME version de Lua que sur NodeMCU (5.1) il faut installer le module 'lfs' avec:
+-- luarocks --lua-dir=/usr/local/opt/lua@5.1 install lfs
+-- source: https://github.com/keplerproject/luafilesystem
+
+print("\n tst_dir1.lua   zf191110.1524   \n")
+
+-- Lua implementation of PHP scandir function
+function scandir(directory)
+    local i, t, popen = 0, {}, io.popen
+    local pfile = popen('ls -a "'..directory..'"')
+    for filename in pfile:lines() do
+        i = i + 1
+        print("filename: "..filename)
+        t[i] = filename
+    end
+    pfile:close()
+    return t
+end
+
+scandir("./")