preinst is in latex-cjk-japanese-wadalab 0.20050817-15.
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 | #!/bin/sh
set -e
# Add this preinst script to ensure that we can safely remove
# /etc/texmf/updmap.d/10latex-cjk-*.cfg if it has not been modified
# by the user.
# Slightly modified from http://www.dpkg.org/dpkg/ConffileHandling
# Remove a no-longer used conffile
rm_conffile() {
CONFFILE="$1"
if [ -e "$CONFFILE" ]; then
md5sum="`md5sum \"$CONFFILE\" | sed -e \"s/ .*//\"`"
# Doesn't work in our case; it only outputs "obsolete", not the md5sum
# from the same line in /var/lib/dpkg/status.
# old_md5sum="`sed -n -e \"/^Conffiles:/,/^[^ ]/{\\\\' $CONFFILE'{s/.* //;p}}\" /var/lib/dpkg/status`"
old_md5sum="2dac302ec9cf6a64b2f1bc971f2955a6"
if [ "$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)
if dpkg --compare-versions "$2" le "latex-cjk-japanese-wadalab_0.20050817-14"; then
rm_conffile "/etc/texmf/updmap.d/10latex-cjk-japanese-wadalab.cfg"
fi
esac
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