postrm is in openssh-server 1:5.9p1-5ubuntu1.
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 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | #!/bin/sh -e
# Automatically added by dh_installdebconf
if [ "$1" = purge ] && [ -e /usr/share/debconf/confmodule ]; then
	. /usr/share/debconf/confmodule
	db_purge
fi
# End automatically added section
abort_mv_conffile () {
	CONFFILE="$1"
	if [ ! -e "$CONFFILE" ]; then
		if [ -e "$CONFFILE.dpkg-old" ]; then
			mv -f "$CONFFILE.dpkg-old" "$CONFFILE"
		elif [ -e "$CONFFILE.moving" ]; then
			mv -f "$CONFFILE.moving" "$CONFFILE"
		fi
	fi
}
finish_mv_conffile () {
	CONFFILE="$1"
	if [ -e "$CONFFILE.dpkg-old" ]; then
		rm -f "$CONFFILE.dpkg-old"
	fi
}
abort_transfer_conffile () {
	CONFFILE="$1"
	if [ -e "$CONFFILE.moved-by-preinst" ]; then
		echo >&2 "Aborting ownership transfer of conffile $CONFFILE ..."
		mv -f "$CONFFILE.moved-by-preinst" "$CONFFILE"
		return 0
	fi
}
case $1 in
	abort-install|abort-upgrade)
		if dpkg --compare-versions "$2" lt 1:4.7p1-4; then
			abort_mv_conffile /etc/pam.d/ssh
		fi
		abort_transfer_conffile /etc/default/ssh
		abort_transfer_conffile /etc/init.d/ssh
		abort_transfer_conffile /etc/pam.d/ssh
		;;
	purge)
		# Remove all non-conffiles that ssh might create, so that we
		# can smoothly remove /etc/ssh if and only if the user
		# hasn't dropped some other files in there. Conffiles have
		# already been removed at this point.
		rm -f /etc/ssh/ssh_host_key /etc/ssh/ssh_host_key.pub
		rm -f /etc/ssh/ssh_host_rsa_key /etc/ssh/ssh_host_rsa_key.pub
		rm -f /etc/ssh/ssh_host_dsa_key /etc/ssh/ssh_host_dsa_key.pub
		rm -f /etc/ssh/ssh_host_ecdsa_key /etc/ssh/ssh_host_ecdsa_key.pub
		rm -f /etc/ssh/sshd_config
		rm -f /etc/ssh/sshd_not_to_be_run
		rmdir --ignore-fail-on-non-empty /etc/ssh
		update-rc.d ssh remove >/dev/null
		if which deluser >/dev/null 2>&1; then
			deluser --quiet sshd > /dev/null || true
		fi
		finish_mv_conffile /etc/pam.d/ssh
		;;
esac
exit 0
 |