postrm is in courier-webadmin 0.78.0-2ubuntu2.
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 | #!/bin/sh
set -e
del_override() {
    if dpkg-statoverride --list $4 >/dev/null; then
	dpkg-statoverride --force --remove $4
    fi
}
if [ "$1" = "remove" ]; then
    # Remove CGI script if installed by this package
    . /usr/share/debconf/confmodule
    db_get courier-webadmin/install-cgi || [ $? -eq 10 ]
    if [ "$RET" = "true" ]; then
	rm -f /usr/lib/cgi-bin/courierwebadmin
    fi
fi
if [ "$1" = "purge" ]; then
    del_override root courier 0750 /etc/courier/webadmin
    del_override root courier 0750 /etc/courier/webadmin/added
    del_override root courier 0750 /etc/courier/webadmin/removed
    del_override root courier 4755 /usr/lib/courier/courier/webmail/webadmin
    # Remove remains of web administration
    rm -rf /etc/courier/webadmin
fi
# Automatically added by dh_installdebconf/11.1.3ubuntu1
if [ "$1" = purge ] && [ -e /usr/share/debconf/confmodule ]; then
	. /usr/share/debconf/confmodule
	db_purge
fi
# End automatically added section
exit 0
 |