This file is indexed.

prerm is in wine1.6 1:1.6.2-0ubuntu4.

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 -e

if [ "$1" = "remove" ] ; then
  if [ -x /usr/sbin/update-binfmts ]; then
    /usr/sbin/update-binfmts --package wine --remove wine /usr/bin/wine || true
  fi
fi