diff -r 31fb35727621 -r 5cb36c12ac49 app-manager/app-manager.c
--- a/app-manager/app-manager.c	Sat Jul 16 11:07:18 2016 +0100
+++ b/app-manager/app-manager.c	Mon Aug 31 07:12:16 2020 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2010  J. Ali Harlow <ali@juiblex.co.uk>
+ * Copyright (C) 2010, 2020  J. Ali Harlow <ali@juiblex.co.uk>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -217,6 +217,7 @@
     GtkWidget *w;
     gchar *s,*database_uri,*contents;
     gchar *database=NULL,*setup_base=NULL,*update_base=NULL;
+    gchar *default_action_base=NULL;
     gsize len;
     struct comps *comps;
     PloverPackageSet *set=NULL;
@@ -229,6 +230,8 @@
 	  "Setup from installation media","uri"},
 	{"update",0,0,G_OPTION_ARG_STRING,&update_base,
 	  "Update from upgrade media","uri"},
+	{"default-action",0,0,G_OPTION_ARG_STRING,&default_action_base,
+	  "Install, remove or update from repository","uri"},
 	{NULL}
     };
 #ifdef WIN32
@@ -256,9 +259,10 @@
 	g_printerr("%s\n",err->message);
 	exit(1);
     }
-    if (setup_base && update_base)
+    if (!!setup_base+!!update_base+!!default_action_base>1)
     {
-	g_printerr("--setup and --update are mutually exclusive\n");
+	g_printerr(
+	  "--setup, --update and --default_action are mutually exclusive\n");
 	exit(1);
     }
 #ifdef WIN32
@@ -294,6 +298,8 @@
 	started=setup(setup_base);
     else if (update_base)
 	started=update(update_base);
+    else if (default_action_base)
+	started=default_action(default_action_base);
     else
     {
 	if (database)
@@ -357,6 +363,7 @@
     g_free(prefix);
     g_free(setup_base);
     g_free(update_base);
+    g_free(default_action_base);
     g_free(database);
     exit(0);
 }