This file is indexed.

postinst is in gnome-settings-daemon 3.4.1-0ubuntu1.

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

# Remove obsolete conffiles

case "$1" in
configure)
    if dpkg --compare-versions "$2" lt-nl "2.24.1"; then
        rm -rf /etc/gnome/config/xrdb
    fi
    if dpkg --compare-versions "$2" lt-nl "2.26.1"; then
        rm -f /etc/xdg/autostart/gnome-settings-daemon.desktop
    fi
esac