preinst is in ikiwiki 3.20120202ubuntu1.
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  | #!/bin/sh
set -e
if [ "$1" = upgrade ] && dpkg --compare-versions "$2" lt 1.2; then
	if [ -e /etc/wikilist ]; then
		if [ ! -e /etc/ikiwiki/wikilist ]; then
			if [ ! -e /etc/ikiwiki ]; then
				mkdir /etc/ikiwiki
			fi
			mv -f /etc/wikilist /etc/ikiwiki/wikilist
		else
			rm -f /etc/wikilist
		fi
	fi
fi
if [ "$1" = upgrade ] && dpkg --compare-versions "$2" lt 3.02; then
	# replaced by symlink
	rm -rf /usr/share/doc/ikiwiki/examples
fi
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