Install the LTR version of QGiS on ubuntu

install-qgis-ltr-ubuntu.sh

# It happend again the instruction for installing gqis are very hard to understand
# To much formation and half baked scripts and instructions. 
# In my experience .. the people using qgis are not the root/vi type of people
# hence the instructions on that page do not work
# In a similar way they do not work for me becasue TLDR. I want clear
# instructions on doing stuff and specially choosing how to install 
# longer term release is .. bad.
# https://www.qgis.org/nl/site/forusers/alldownloads.html#debian-ubuntu

set -x
set -o
apt-get install -y gnupg software-properties-common
rm -rf  /etc/apt/keyrings/qgis-archive-keyring.gpg
wget -O /etc/apt/keyrings/qgis-archive-keyring.gpg https://download.qgis.org/downloads/qgis-archive-keyring.gpg

cat <<HERE > /etc/apt/sources.list.d/qgis.sources
Types: deb deb-src
URIs: https://qgis.org/debian-ltr
Suites: `lsb_release -c`
Architectures: amd64
Components: main
Signed-By: /etc/apt/keyrings/qgis-archive-keyring.gpg
HERE
apt-get update
apt-cache policy qgis | grep qris.org || exit 1
apt-get install qgis