preinst is in hplip 3.12.2-1ubuntu3.
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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# preinst script for hplip
#
# see: dh_installdeb(1)
set -e
rm_udevrule() {
PKG="$1"
CONFFILE="$2"
if [ -e "$CONFFILE" ]; then
md5sum="$(md5sum "$CONFFILE" | awk '{print $1}')"
old_md5sum="$(dpkg-query -W -f='${Conffiles}' $PKG | sed -n -e "\' $CONFFILE ' { s/ obsolete$//; s/.* //; p }")"
if [ "$md5sum" = "$old_md5sum" ]; then
rm -f "$CONFFILE"
fi
fi
}
# 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
upgrade|install|abort-upgrade)
# Remove symlink, dpkg doesn't like it at all
if [ -h /usr/share/doc/hplip ]; then
rm -f /usr/share/doc/hplip
fi
# Stop and remove any daemon from old HPLIP installations
if [ -x /etc/init.d/hplip ]; then
pkill hpiod || true
if pgrep hpiod >/dev/null; then sleep 3; pkill -9 hpiod || true; fi
if pgrep hpiod >/dev/null; then
echo 'Old HPLIP daemon (hpiod) should have been stopped, but did not. Please kill manually before hplip can proceed'
exit 1
fi
rm -fR /etc/init.d/hplip
update-rc.d -f hplip remove
fi
# Remove obsolete config file for HPLIP startup script
rm -f /etc/default/hplip
# Remove obsolete udev rules
rm_udevrule hplip /etc/udev/rules.d/55-hpmud.rules
rm_udevrule hplip /etc/udev/rules.d/45-hplip.rules
rm_udevrule hplip /etc/udev/rules.d/024_hpmud.rules
rm_udevrule hplip /etc/udev/rules.d/56-hpmud_support.rules
rm_udevrule hplip /etc/udev/rules.d/z60_hplip.rules
;;
*)
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
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