debian-chromium-on-ubuntu.sh

#!/bin/bash
# Install or update non-snap Chrome Chromium from Debian

sudo -v

sourcefile=/etc/apt/sources.list.d/debian-chromium.list

sources='
deb [signed-by=/usr/share/keyrings/debian-archive-keyring.gpg] http://ftp.us.debian.org/debian/ stable main

deb [signed-by=/usr/share/keyrings/debian-archive-keyring.gpg] http://security.debian.org/ stable/updates main

# stable-updates, previously known as "volatile"
deb [signed-by=/usr/share/keyrings/debian-archive-keyring.gpg] http://ftp.us.debian.org/debian/ stable-updates main
'

prefsfile=/etc/apt/preferences.d/debian-chromium.pref

prefs='
Explanation: Prevent installing from debian repo.
Package: *
Pin: origin "*.debian.org"
Pin-Priority: 1

Explanation: Allow installing chromium from debian repo.
Package: chromium*
Pin: origin "*.debian.org"
Pin-Priority: 100
'

if [[ ! -f ${sourcefile}.save ]]; then

    echo "$sources" | sudo tee ${sourcefile}.save
    echo "$prefs" | sudo tee $prefsfile

fi

read -p "Ready to enable Debian sources? <enter> "
sudo apt install debian-archive-keyring
sudo mv ${sourcefile}.save $sourcefile
sudo apt update

read -p "Ready to update Chromium? <enter> "
sudo apt install chromium

read -p "Ready to disable Debian sources? <enter> "
sudo mv $sourcefile ${sourcefile}.save
sudo apt update

echo
echo "Suggest you rename Chromium in launch menu to: Chromium Debian non-snap"