preinst is in popularity-contest 1.57ubuntu1.
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 | #!/bin/sh
set -e
case "$1" in
install|upgrade)
# Move a conffile without triggering a dpkg question if it was not modified.
if dpkg --compare-versions "$2" le "1.44"; then
PKGNAME="popularity-contest"
CONFFILE="/etc/cron.weekly/popularity-contest"
NEWCONFFILE="/etc/cron.daily/popularity-contest"
if [ -e "$CONFFILE" ]; then
md5sum="`md5sum \"$CONFFILE\" | sed -e \"s/ .*//\"`"
old_md5sum="`dpkg-query -W -f='${Conffiles}' $PKGNAME | sed -n -e \"\\\\' $CONFFILE '{s/ obsolete$//;s/.* //p}\"`"
if [ "$md5sum" = "$old_md5sum" ]; then
rm -f "$CONFFILE"
else
mv -f "$CONFFILE" "$NEWCONFFILE"
fi
fi
fi
esac
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