preinst is in lightdm-gtk-greeter 2.0.1-2ubuntu4.
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 | #!/bin/sh
set -e
if dpkg-maintscript-helper supports mv_conffile; then
dpkg-maintscript-helper mv_conffile \
/etc/lightdm/lightdm-gtk-greeter-ubuntu.conf \
/etc/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf \
2.0.1-1ubuntu1 -- "$@"
fi
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/lightdm/lightdm-gtk-greeter-ubuntu.conf 2.0.1-2ubuntu3 -- "$@"
# End automatically added section
# Automatically added by dh_installdeb
dpkg-maintscript-helper rm_conffile /etc/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf 2.0.1-2ubuntu3 -- "$@"
# End automatically added section
exit 0
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