This file is indexed.

postinst is in watershed 8.

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

if [ "$1" = configure ] && which update-initramfs >/dev/null 2>&1; then
    update-initramfs -u
fi