preinst is in texlive-doc-uk 2012.20120611-1.
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 -e
# preinst.pre
# $Id: preinst.pre 5047 2012-02-17 06:41:24Z preining $
# we want to be sure that experimental versions are purged before
# the first unstable is installed
# furthermore check that we are at least at version 2005 for the
# temporary tetex packages upgrades
case "$1" in
upgrade|install)
old_version=$2
if [ -n "$old_version" ] && dpkg --compare-versions "$old_version" lt 2005-2 && dpkg --compare-versions "$old_version" gt 2005 ; then
echo "Upgrade from experimental versions are not supported!" >&2
echo "Please purge all texlive packages before installation." >&2
exit 1
fi
;;
esac
# end preinst.pre
exit 0
|