preinst is in dictionaries-common 1.12.1ubuntu2.
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
# preinst script for dictionaries-common
set -e
case "$1" in install|upgrade)
# This will clean up the alternatives for ispell-dictionary.hash
# set by the pre-Policy ispell dictionary packages
# A /var/lib/dpkg/alternatives/ispell-dictionary.hash file is sometimes left
# if alternative was set to manual mode. Setting it to --auto ensures removal.
# Doing also for wordlists just in case.
ALTSDIR="/var/lib/dpkg/alternatives"
ALTERNATIVES="ispell-dictionary.hash dictionary"
for alternative in $ALTERNATIVES; do
if [ -e "$ALTSDIR/$alternative" ]; then
echo " Removing obsolete alternative '$alternative'" >&2
DICTS=`LANG=C update-alternatives --display $alternative \
| grep priority | cut -f1 -d" "`
for i in $DICTS ; do
update-alternatives --remove $alternative $i
done
update-alternatives --auto $alternative || true
fi
done
# Once wamerican is the only standard dict package and it does not
# depend on dictionaries-common it will provide an own
# /usr/share/dict/words pointing to american wordlist. This must be
# diverted if dictionaries-common system is used
dpkg-divert --package dictionaries-common \
--divert /usr/share/dict/words.pre-dictionaries-common \
--rename /usr/share/dict/words
;;
esac
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