This file is indexed.

postinst is in libsane-extras 1.0.22.3ubuntu1.

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

case "$1" in
    configure)
    if [ "$(uname -s)" = "Linux" ]; then
	if [ -e /etc/hotplug/usb/libsane-extras.usermap ]; then
	    rm -f /etc/hotplug/usb/libsane-extras.usermap
	fi
	if [ -e /etc/sane.d/hotplug/libsane-extras.db ]; then
	    rm -f /etc/sane.d/hotplug/libsane-extras.db
	    rmdir -p --ignore-fail-on-non-empty /etc/sane.d/hotplug
	fi
    fi
    ;;

    abort-upgrade|abort-remove|abort-deconfigure)
    ;;

    *)
    echo "$0 called with unknown argument '$1'" >&2
    exit 1
    ;;
esac