postrm is in icinga2-classicui 2.4.1-2ubuntu1.
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  | #!/bin/sh
# postrm script for icinga2-common
set -e
# shorthand
en="/etc/icinga2-classicui"
. /usr/share/debconf/confmodule
# Apache2
disable_apache2() {
    if [ -e /usr/share/apache2/apache2-maintscript-helper ] ; then
        echo "disabling Apache2 configuration ..."
        . /usr/share/apache2/apache2-maintscript-helper
        apache2_invoke disconf icinga2-classicui
    fi
    if [ -L /etc/apache2/conf.d/icinga-web.conf ]; then
        echo "removing link /etc/apache2/conf.d/icinga2-classicui.conf ..."
        # remove link to config
        rm -f /etc/apache2/conf.d/icinga2-classicui.conf
        # reload webserver
        [ -x $(which invoke-rc.d) ] && invoke-rc.d apache2 reload || true
    fi
}
case "$1" in
    purge)
        disable_apache2 "$@"
        rm -f "$en/htpasswd.users"
    ;;
    remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
        disable_apache2 "$@"
        dpkg-maintscript-helper mv_conffile \
            /etc/icinga2/classicui/apache2.conf \
            /etc/icinga2-classicui/apache2.conf 2.2.0-1~ icinga2-classicui -- "$@"
        dpkg-maintscript-helper mv_conffile /etc/icinga2/classicui/cgi.cfg \
            /etc/icinga2-classicui/cgi.cfg 2.2.0-1~  icinga2-classicui -- "$@"
    ;;
    *)
        echo "postrm called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac
# 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
exit 0
 |