QGIS is a cross-platform free and open-source desktop geographic information system (GIS) application. Although being cross-platform, level of official support varies from one platform to another. For the highest level of official support, I will recommend Ubuntu for building QGIS application environment.
I have modified the installation process a bit, creating separate sources list file and trusted signing key file, to better fit the design philosophy of APT.
Import QGIS Archive Automatic Signing Key
sudo mkdir -m755 -p /etc/apt/keyrings curl -fsSL https://download.qgis.org/downloads/qgis-archive-keyring.gpg | sudo gpg --dearmor --output /etc/apt/keyrings/qgis-archive-keyring.gpg
Setup Sources
On Ubuntu 22.04 LTS, Jammy Jellyfish
Create file /etc/apt/sources.list.d/qgis-ubuntu-focal.list with following content.
deb [signed-by=/etc/apt/keyrings/qgis-archive-keyring.gpg] https://qgis.org/ubuntu/ jammy main deb-src [signed-by=/etc/apt/keyrings/qgis-archive-keyring.gpg] https://qgis.org/ubuntu/ jammy main
On Ubuntu 20.04 LTS, Focal Fossa
Create file /etc/apt/sources.list.d/qgis-ubuntu-focal.list with following content.
deb [signed-by=/etc/apt/keyrings/qgis-archive-keyring.gpg] https://qgis.org/ubuntu/ focal main deb-src [signed-by=/etc/apt/keyrings/qgis-archive-keyring.gpg] https://qgis.org/ubuntu/ focal main
On Ubuntu 18.04 LTS, Bionic Beaver
Create file /etc/apt/sources.list.d/qgis-ubuntu-bionic.list with following content.
deb [signed-by=/etc/apt/keyrings/qgis-archive-keyring.gpg] https://qgis.org/ubuntu/ bionic main deb-src [signed-by=/etc/apt/keyrings/qgis-archive-keyring.gpg] https://qgis.org/ubuntu/ bionic main
On Ubuntu 16.04 LTS, Xenial Xerus (Obsolete)
I want my GDAL to support WMTS, which is not implemented until GDAL 2.1, so I am going to install GDAL from UbuntuGIS repository. With this considered, I’ll just point the QGIS APT source to Latest Release with UbuntuGIS dependencies to get the most out of everything.
Setup QGIS Suite
Create file /etc/apt/sources.list.d/qgis-ubuntugis-xenial.list with following content.
deb [signed-by=/etc/apt/keyrings/qgis-archive-keyring.gpg] https://qgis.org/ubuntugis/ xenial main deb-src [signed-by=/etc/apt/keyrings/qgis-archive-keyring.gpg] https://qgis.org/ubuntugis/ xenial main
Setup UbuntuGIS Suite
Where newer version of GDAL resides.
sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable
Install QGIS
sudo apt update sudo apt install qgis