unetbootin questions

I have two questions concerning unetbootin.

1) I want to use unetbootin in a script and I know how to set op tions on the command
line. However after finishing unetbootin stops with a final reboot?/exit? question. How
can I preset an answer ("exit") to that question. The only workaround I have is to
externally check whether unetbootin is done and then kill the process.

2) Is there a 'verbose' option to unetbootin which shows which commands are actually
executed. (Currently I am mainly interested in the steps for turning an iso-image into
a bootable USB-stick.) If so I could use these steps directly in my script and sidestep
question 1.