diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..12123b5
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "reveal.js"]
+	path = reveal.js
+	url = https://github.com/hakimel/reveal.js.git
diff --git a/autodifesa-digitale.md b/autodifesa-digitale.md
index 86bf74c..f307977 100644
--- a/autodifesa-digitale.md
+++ b/autodifesa-digitale.md
@@ -176,6 +176,16 @@ automaticamente ai files che noi creiamo, elaboriamo, copiamo, vediamo o ascolti
  
 ![](../images/37_metadata_brutti3doc.jpg)
 
+-----
+
+## MAT
+
+Per cancellare i metadati da so linux 
+```
+$ mat file.jpg
+```
+
+
 -----
 
 # Navigazione
diff --git a/reveal.js b/reveal.js
new file mode 160000
index 0000000..0b3e783
--- /dev/null
+++ b/reveal.js
@@ -0,0 +1 @@
+Subproject commit 0b3e7839ebf4ed8b6c180aca0abafa28c67aee6d
diff --git a/run.sh b/run.sh
index 14a4003..bcaef34 100755
--- a/run.sh
+++ b/run.sh
@@ -1,13 +1,22 @@
 #!/bin/bash
 
+# Da eseguire la prima volta:
+# git submodule add https://github.com/hakimel/reveal.js.git reveal.js
+
+
 #git submodule init
+
+
 git submodule update --init --recursive --remote
-mkdir -p reveal.js/js/ reveal.js/css/ reveal.js/images/
+
+
+#mkdir -p reveal.js/js/ reveal.js/css/ reveal.js/images/
 #cp js/* reveal.js/js/
 #cp css/* reveal.js/css/
+mkdir -p reveal.js/images/
 cp images/* reveal.js/images/
-rm -f reveal.js/index.html reveal.js/mastodon-presentazione.md
-ln index.html mastodon-presentazione.md reveal.js/
+rm -f reveal.js/index.html reveal.js/autodifesa-digitale.md
+ln index.html autodifesa-digitale.md reveal.js/
 
 (firefox reveal.js/index.html) || (echo -e "\n Apri con il tuo browser preferito" `pwd`"/reveal.js/index.html")