This file is indexed.

prerm is in postgresql-client-9.5 9.5.2-1.

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.

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#!/bin/sh

set -e

VERSION=${DPKG_MAINTSCRIPT_PACKAGE##*-}



if [ "$1" = remove ]; then
    . /usr/share/postgresql-common/maintscripts-functions
    remove_client_version $VERSION
fi