This file is indexed.

preinst is in apt 0.8.16~exp12ubuntu10.21.

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.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
#! /bin/sh

set -e

# dpkg does this for us while we are upgrading..
#if [ "$1" = "upgrade" -a -L /var/state/apt -a -e /var/lib/apt -a ! -L /var/state/apt ] && dpkg --compare-versions "$2" ">=" "0.4.10"; then
#  rm /var/state/apt
#fi

dpkg-maintscript-helper rm_conffile /etc/apt/apt.conf.d/01ubuntu \
	0.8.16~exp12ubuntu6 -- "$@"

if [ "$1" = "upgrade" -o "$1" = "install" -a "$2" != "" ]; then
  if [ ! -e /var/lib/apt -a -e /var/state/apt ]; then
    # upgrading from /var/state/apt using apt.
    # it's probably running now so we want to ensure /var/state/apt
    # is still valid afterwards. and since we're upgrading

    if [ -x /usr/bin/perl -a -d /var/state/apt -a ! -L /var/state/apt ] &&
      perl -e 'exit 1 if ((stat("/var/lib"))[0] != (stat("/var/state/apt"))[0])'
    then
      # same fs, we can mv it
      mv /var/state/apt /var/lib/apt
      ln -s ../lib/apt /var/state/apt
      # note that this symlink (/var/state/apt) will be removed when
      # dpkg finishes unpacking the apt we're about to install; this is okay
    else
      # scary, let's just symlink it and hope
      ln -s /var/state/apt /var/lib/apt
    fi
  fi
  touch /var/lib/apt/lists/partial/.delete-me-later || true
fi