preinst is in xfce4-session 4.12.1-3ubuntu3.
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 | #!/bin/sh -e
# Remove symlink for el, replaced by a folder in 4.8.2-1
case "$1" in
install|upgrade)
if dpkg --compare-versions "$2" lt "4.8.2-1"; then
[ -h /usr/share/doc/xfce4-session/html/el/images ] && rm /usr/share/doc/xfce4-session/html/el/images || true
fi
esac
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/xdg/autostart/xfce4-tips-autostart.desktop 4.8.1-4 -- "$@"
# End automatically added section
exit 0
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