preinst is in update-motd 3.5-0ubuntu1.
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 -e
PKG="update-motd"
# Remove a no-longer used conffile
rm_conffile() {
CONFFILE="$1"
if [ -e "$CONFFILE" ]; then
md5sum="`md5sum \"$CONFFILE\" | sed -e \"s/ .*//\"`"
old_md5sum="`sed -n -e \"/^Conffiles:/,/^[^ ]/{\\\\' $CONFFILE'{s/.* //;p}}\" /var/lib/dpkg/status`"
if [ "$md5sum" != "$old_md5sum" ]; then
echo "Obsolete conffile $CONFFILE has been modified by you."
echo "Saving as $CONFFILE.dpkg-bak ..."
mv -f "$CONFFILE" "$CONFFILE".dpkg-bak
else
echo "Removing obsolete conffile $CONFFILE ..."
rm -f "$CONFFILE"
fi
fi
}
case "$1" in
install|upgrade)
# Purge unneeded a) init script, b) cronjobs, c) inotify configuration
update-rc.d -f $PKG remove
rm_conffile /etc/init.d/$PKG
rm_conffile /etc/cron.d/$PKG
rm_conffile /etc/$PKG/iwatch.xml
# Reset the current motd to the bare skeleton established by bootmisc.sh
uname -snrvm > /var/run/motd
cat /etc/motd.tail 2>/dev/null >> /var/run/motd || true
;;
esac
|