Mounthome

In /usr/local/bin/mounthome:

#!/bin/bash
if [ -e /home/info.txt ]
then
	echo "Verschluesselte Partition ist bereits eingebunden."
	sleep 1
else
	/sbin/cryptsetup luksOpen /media/daten/images/eeehome encimg
	/bin/mount /dev/mapper/encimg /home
	/bin/df -h | grep "home"
	echo "Eingabetaste druecken..."
	read
fi

chmod +x /usr/local/bin/mounthome

In /etc/lightdm/lightdm.conf.d/10-xubuntu.conf:

greeter-setup-script=xterm -u8 -e /usr/local/bin/mounthome