diff --git a/books/les-commandes-linux.json b/books/les-commandes-linux.json
index 38df893..94a80a4 100644
--- a/books/les-commandes-linux.json
+++ b/books/les-commandes-linux.json
@@ -6,6 +6,7 @@
         "double-dollar",
         "symbole-e-commercial",
         "symbole-double-et-commercial",
+        "symbole-double-et-commercial-2",
         "lsof",
         "ls",
         "lsblk",