pidof X >/dev/null mount /media/usbstick /media/usbstick/hdkey umount /media/usbstick if [ -n "$DISPLAY" ]; then Xdialog --backtitle 'Encryption for Alex' \ --stdout \ --passwordbox 'Please enter the filesystem password:' 12 40 else dialog --backtitle 'Encryption for Alex' \ --clear --stdout \ --passwordbox 'Enter the filesystem password:' 8 50 fi /dev/hda5 /dev/random