This file is indexed.

postrm is in isc-dhcp-client 4.1.ESV-R4-0ubuntu5.

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.

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#!/bin/sh -e
#
#

if [ "$1" = "purge" ]; then
	# Remove lease database
	rm -f /var/lib/dhcp/dhclient.leases*

	# Try to remove directory
	if [ -d /var/lib/dhcp ]; then
		rmdir --ignore-fail-on-non-empty /var/lib/dhcp/
	fi

	rmdir --ignore-fail-on-non-empty /etc/dhcp

fi

# Automatically added by dh_apparmor
if [ "$1" = "purge" ]; then
    rm -f "/etc/apparmor.d/disable/sbin.dhclient" || true
    rm -f "/etc/apparmor.d/force-complain/sbin.dhclient" || true
    rm -f "/etc/apparmor.d/local/sbin.dhclient" || true
    rmdir /etc/apparmor.d/local 2>/dev/null || true
fi
# End automatically added section