preinst is in ubuntu-release-upgrader-core 1:16.04.25.
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 34 35 36 37 38 39 40 41 42 43 44 | #!/bin/sh
# preinst script for ubuntu-release-upgrader
#
# see: dh_installdeb(1)
set -e
# summary of how this script can be called:
# * <new-preinst> `install'
# * <new-preinst> `install' <old-version>
# * <new-preinst> `upgrade' <old-version>
# * <old-preinst> `abort-upgrade' <new-version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package
case "$1" in
install|upgrade)
# this is replaced to be a real file an not a symlink in version
# 0.134.2, dpkg will not remove the symlink and put the new
# file as .dpkg-new (can be removed post-lucid)
if [ -L /etc/update-motd.d/91-release-upgrade ]; then
rm -f /etc/update-motd.d/91-release-upgrade
fi
if dpkg --compare-versions "$2" lt 1:0.189 && [ -f /etc/update-manager/release-upgrades ]; then
sed -i -s 's/^prompt=/Prompt=/' /etc/update-manager/release-upgrades
fi
;;
abort-upgrade)
;;
*)
echo "preinst called with unknown argument \`$1'" >&2
exit 1
;;
esac
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
exit 0
|