+=item default_cmd
+
+If set, this command is executed when no command is specified on the
+command line. If not set, C<console_cmd> is executed instead.
+
+As F<novaboot> (client) always uses the C<console> command to connect
+to the console, C<default_cmd> can be used to boot the target with
+some default configuration for users who do not use F<novaboot> client
+to boot their own configuration. For example, C<default_cmd> can be
+set to execute a novaboot script.
+
+In other words, C<ssh board@host> boots the board in the default
+configuration, whereas C<novaboot --ssh=board@host ...> boots the
+board as configured in C<...>.