Index: trunk/scripts/invirt-admin/invirt-admin
===================================================================
--- trunk/scripts/invirt-admin/invirt-admin	(revision 2161)
+++ trunk/scripts/invirt-admin/invirt-admin	(revision 2237)
@@ -33,4 +33,9 @@
 	--dist)      dist=$2;      shift 2;;
 	--mirror)    mirror=$2;    shift 2;;
+        *)
+            echo "Unknown option: $1"
+            echo
+            usage
+            ;;
     esac
 done