postinst is in davmail 4.8.3.2554-1.
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 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  | #!/bin/sh
set -e
USER=davmail
if ! getent passwd $USER >/dev/null; then
    adduser --quiet --system --no-create-home --home /var/lib/$USER $USER
fi
for i in /var/log/$USER.log /var/lib/$USER;
do
    if ! dpkg-statoverride --list --quiet "$i" >/dev/null; then
        dpkg-statoverride --force --quiet --update --add davmail adm 0755 "$i"
    fi
done
# Automatically added by dh_systemd_enable/11.1.3ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if deb-systemd-helper debian-installed 'davmail.service'; then
		# This will only remove masks created by d-s-h on package removal.
		deb-systemd-helper unmask 'davmail.service' >/dev/null || true
		if deb-systemd-helper --quiet was-enabled 'davmail.service'; then
			# Create new symlinks, if any.
			deb-systemd-helper enable 'davmail.service' >/dev/null || true
		fi
	fi
	# Update the statefile to add new symlinks (if any), which need to be cleaned
	# up on purge. Also remove old symlinks.
	deb-systemd-helper update-state 'davmail.service' >/dev/null || true
fi
# End automatically added section
# Automatically added by dh_icons/11.1.3ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if which update-icon-caches >/dev/null 2>&1 ; then
		update-icon-caches /usr/share/icons/davmail.png
	fi
fi
# End automatically added section
# Automatically added by dh_installinit/11.1.3ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -x "/etc/init.d/davmail" ]; then
		update-rc.d davmail defaults-disabled >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d davmail $_dh_action || exit 1
	fi
fi
# End automatically added section
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