postinst is in grub-gfxpayload-lists 0.6.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | #! /bin/sh
set -e
update-grub-gfxpayload
exit 0
|