How to customize splash screen in Ubuntu

If you are already bored of the default Ubuntu bootscreen, you can simply replace it a few simple commands. We can make ourselves own bootscreen or to select from among already created.

The bootscreen files layout in Ubuntu 16 changes the location of plymouth themes from /lib/plymouth/themes to /usr/share/plymouth/themes  and so all of the theme install scripts that assumed the previous layout now install to the wrong location.

Run the following command which will not only install a number of new themes into the correct location but also will fix the now incorrect update-alternatives scheme:

sudo apt-get install plymouth-themes

Migrating old themes to the new location is simple, just move the directory as each theme is contained in a directory named after the theme

cd /lib/plymouth/themes && sudo mv <theme-directory> /usr/share/plymouth/themes

The old themes are self-referential in that the .plymouth theme file contains a reference to the directory that the theme is installed. Change these references to the correct ones (replace /lib/plymouth/themes  with /usr/share/plymouth/themes).

You can download from here:
https://www.gnome-look.org/browse/cat/108/ord/top/

Extract the new theme here: /usr/share/plymouth/themes
Update the theme list to make the theme list selectable:

update-alternatives --install /usr/share/plymouth/themes/default.plymouth default.plymouth /usr/share/plymouth/themes/<theme_directory> 100

Create an update script:

mcedit /home/<username>/plymouth-frissites.sh

Include these text:

#!/bin/bash

echo "Choose the number of the theme you want to use, then [ENTER]"
echo
sudo update-alternatives --config default.plymouth
sudo update-initramfs -u
echo
read -p "Do you want to test the theme? (Y/N) "
if [ "$REPLY" != "n" -a "$REPLY" != "N" ] ; then
echo
echo "Running 10-second test..."
sudo plymouthd ; sudo plymouth --show-splash ; for ((I=0; I<10; I++)); do sleep 1 ; sudo plymouth --update=test$I ; done ; sudo plymouth --quit
fi
exit

Go ahead, and reboot your desktop. You should see a new custom splash screen during system startup like this: