I think I would be looking at trying to get the "yes" command to work with it.

The "yes" command simply answers yes to any y/n prompts without the need for any user interaction.

For example: # yes | rm -i *.txt

The yes command here will answer yes to each file it prompts for a confirmation to delete.

So, if you're able to pass in a command like "yes | reboot" then that may well work for you.

Also see http://www.computerhope.com/unix/yes.htm