dialog based install script on *ix

Need installation script leveraging dialog/xdialog ## Deliverables The script needs to perform the following simple actions: - Display a splash screen. - determine if run as root - Display a EULA - get EULA acceptance - get target directory from the user - copy files from an archive to target directory - create (copy) default config and default log file - show progress-bar for the above - display installation summary and call an external setup application The script needs to be based on dialog/xdialog and work in console and X-mode.