postrm is in isso 0.10.6+git20170928+dfsg-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  | #!/bin/sh
set -e
case "$1" in
    purge)
        userdel isso || true
        rm -rf /var/lib/isso
    ;;
    remove|failed-upgrade|abort-install|abort-upgrade|disappear|upgrade)
    ;;
    *)
        echo "postrm called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac
# Automatically added by dh_installinit/10.10.5ubuntu1
if [ "$1" = "purge" ] ; then
	update-rc.d isso remove >/dev/null
fi
# In case this system is running systemd, we make systemd reload the unit files
# to pick up changes.
if [ -d /run/systemd/system ] ; then
	systemctl --system daemon-reload >/dev/null || true
fi
# End automatically added section
exit 0
 |