This file is indexed.

preinst is in inn 1:1.7.2q-41build1.

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

check_version() {
  case "$2" in
  1.4*)
  echo "Upgrade from INN 1.4 is not supported."
  exit 1
  ;;

  2.2.2)
  echo "Upgrade from INN 2.2.2 is not supported."
  exit 1
  ;;
  esac
}

case "$1" in
  install)
  ;;

  upgrade|abort-upgrade)
  check_version "$@"
  ;;

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