This might come in handy if you need to change the splash loading screen of the Ubuntu logo. However you will still have the purple loading dots just as an activity monitor.

Some important things to note about the script – 

If a file “branded.txt” exists in the “kiosk” user Document folder, it will stop the script from executing.

Once the system is “branded”, it will output the brand selection to the file “branded.txt” as can be seen in the script below.

Your custom logos need to be placed in a directory called “logos” in “/opt”

You need to have two copies of the same logo, but named differently in the directory /opt/logos and this should also reflect in the script.

The script relies on Zenity to be installed so that it can call a dialog box where it will ask for the logo number to be inputted.

If you have more than 4 logo’s which could be chosen, you can just extend the script and increase the input string number from “4” to your chosen amount.

!/bin/bash
inputStr=100
while [ $inputStr -gt 4 ]
do
if [ -e /home/kiosk/Documents/branded.txt ];
then
exit
else
inputStr=$(zenity --entry --title="Input Office Number" --text="Office Number:")
fi
case $inputStr in
1) mv /opt/logos/logo1.png /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.png & /opt/logos/logo11.png /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo16.png
        echo 'branded1' >/home/kiosk/Documents/branded.txt
;;
2) mv /opt/logos/logo2.png /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.png & /opt/logos/logo22.png /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo16.png
        echo 'branded2' >/home/kiosk/Documents/branded.txt
;;
3) mv /opt/logos/logo3.png /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.png & /opt/logos/logo33.png /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo16.png
        echo 'branded3' >/home/kiosk/Documents/branded.txt
;;
4) mv /opt/logos/logo4.png /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.png & /opt/logos/logo44.png /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo16.png
        echo 'branded4' >/home/kiosk/Documents/branded.txt
;;
esac
done

In addition to this script you will also need to edit the folder where the logos are placed by default for the system and also create the directory where you are storing your custom logos. You can do so by running the below commands

chmod +777 /usr/share/plymouth/themes/ubuntu-logo
mkdir /opt/logos
chmod +777 /opt/logos