postrm is in icinga-idoutils 1.13.4-2build1.
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 | #!/bin/sh
set -e
#set -x
if [ -f /usr/share/debconf/confmodule ]; then
        . /usr/share/debconf/confmodule
fi
if [ -f /usr/share/dbconfig-common/dpkg/postrm ]; then
        . /usr/share/dbconfig-common/dpkg/postrm
        dbc_go icinga-idoutils $@
fi
if [ "$1" = "purge" ]; then
	rm -f /etc/icinga/ido2db.cfg
    if which ucf >/dev/null; then
        ucf --purge /etc/icinga/ido2db.cfg
    fi
	db_purge
fi
if [ "$1" = "purge" ] ; then
	update-rc.d ido2db remove >/dev/null
fi
# Automatically added by dh_installdebconf/10.6.4ubuntu1
if [ "$1" = purge ] && [ -e /usr/share/debconf/confmodule ]; then
	. /usr/share/debconf/confmodule
	db_purge
fi
# End automatically added section
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