postinst is in xscreensaver 5.30-1+deb8u2.
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 35 36 37 38 39 | #!/bin/sh
set -e
#fix up our old screwup
if dpkg-divert --list /usr/share/gnome/apps/Settings/Desktop/screensaver-properties.desktop | grep -q "diversion of /usr/share/gnome/apps/Settings/Desktop/screensaver-properties.desktop to /usr/share/gnome/apps/Settings/Desktop/screensaver-properties.desktop.orig by xscreensaver"; then
rm -f /usr/share/gnome/apps/Settings/Desktop/screensaver-properties.desktop
rm -f /usr/share/control-center/Desktop/screensaver-properties.desktop
dpkg-divert --package xscreensaver --remove --rename --divert \
/usr/share/gnome/apps/Settings/Desktop/screensaver-properties.desktop.orig \
/usr/share/gnome/apps/Settings/Desktop/screensaver-properties.desktop
dpkg-divert --package xscreensaver --remove --rename --divert \
/usr/share/control-center/Desktop/screensaver-properties.desktop.orig \
/usr/share/control-center/Desktop/screensaver-properties.desktop
fi
# remove old link if it exists
if [ -L /usr/X11R6/lib/X11/app-defaults/XScreenSaver ]; then
rm /usr/X11R6/lib/X11/app-defaults/XScreenSaver
fi
# Use the correct app defaults
cd /etc/X11/app-defaults
if [ -f XScreenSaver-gl ]; then
ln -sf XScreenSaver-gl XScreenSaver
else
ln -sf XScreenSaver-nogl XScreenSaver
fi
# Remove /usr/doc symlink
if [ -d /usr/doc -a -h /usr/doc/xscreensaver -a -d /usr/share/doc/xscreensaver ]; then
rm -f /usr/doc/xscreensaver
fi
# Automatically added by dh_installmenu
if [ "$1" = "configure" ] && [ -x "`which update-menus 2>/dev/null`" ]; then
update-menus
fi
# End automatically added section
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