postinst is in five-or-more 1:3.18.0-1.
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  | #! /bin/sh
set -e
if [ "$1" = "configure" ] ; then
  if [ ! -d /var/games ]; then
	mkdir /var/games
  fi
  for FILE in glines.Small.scores glines.Medium.scores glines.Large.scores; do
	if [ -e /var/games/$FILE ]; then
		continue
	fi
	touch /var/games/$FILE
	chown root:games /var/games/$FILE
	chmod 664 /var/games/$FILE
  done
fi
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