This file is indexed.

prerm is in udisks 1.0.4-5ubuntu2.2.

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

set -e

get_pid() {
    [ -n "$1" ] || return 0
    [ -S /var/run/dbus/system_bus_socket ] || return 0

    dbus-send --system --dest=org.freedesktop.DBus --print-reply \
              /org/freedesktop/DBus org.freedesktop.DBus.GetConnectionUnixProcessID \
              string:$1 2>/dev/null | awk '/uint32/ {print $2}'
}

if [ "$1" = "remove" ]; then
    kill $(get_pid org.freedesktop.UDisks) 2>/dev/null || true
fi