This file is indexed.

postinst is in s-nail 14.9.6-3.

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" ] && [ -n "$2" ] && dpkg --compare-versions "$2" lt 14.8.14-2~ ; then
    update-alternatives --remove "mailx" "/usr/bin/s-nail"
fi

# Automatically added by dh_installmenu/11.1.4ubuntu1
if [ "$1" = "configure" ] && [ -x "`which update-menus 2>/dev/null`" ]; then
	update-menus
fi
# End automatically added section