postinst is in xen-hypervisor-4.6-amd64 4.6.0-1ubuntu4.
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 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | #!/bin/bash
set -e
case "$1" in
configure)
if command -v update-grub > /dev/null && [ -d /boot/grub ]; then
update-grub || :
fi
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
*)
echo "postinst called with unknown argument \`$1'" >&2
exit 1
;;
esac
exit 0
|