ref: 1e8a9ebb0f76b0ebe8eb31d79c44324c1c1ed70f
dir: /rc/bin/inst/finish/
#!/bin/rc
# desc: finish the installation and reboot
# prereq: bootsetup
# mustdo:
switch($1) {
case checkdone
finish=ready
export finish
case go
echo 'Congratulations; you''ve completed the install.'
echo
halt
}