Installing R on Ubuntu

I'm trying to install R on my Ubuntu 22.10, by following this article
However, when installing the repository, and then updating, I receive the message.

E: The repository 'https://cloud.r-project.org/bin/linux/ubuntu kinetic-cran40/ Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

Do you have an idea on how to solve this "impasse"? Best regards!

Rhas always been included in the standard software sources of Ubuntu. It can conveniently and safely be installed with

sudo apt install r-base

Plenty of additional packages also can be installed using apt.

You can see them all with the command

apt search r-cran

or search a specific package like so:

~$ apt search r-cran | grep xtable

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

r-cran-xtable/jammy,jammy 1:1.8-4-2 all
~$ 

As a general rule, always check first whether the software you are looking for is available in the standard ubuntu repositories. That is software that is specifically compiled for your Ubuntu version, easy to install, and security updates are automatically applied.

According to https://cloud.r-project.org/bin/linux/ubuntu/fullREADME.html, the only supported releases are currently:

Jammy Jellyfish (22.04, amd64 only)
Impish Indri (21.10, amd64 only),
Focal Fossa (20.04; LTS and amd64 only),
Bionic Beaver (18.04; LTS), and
Xenial Xerus (16.04; LTS).

Your release (22.10) is not in this list. Also in my case, using linux mint 21.10 (vera), the automatic ppa settings fail.

This is due to the use of lsb_release -cs in the official ppa install command to determine your linux flavor:

sudo add-apt-repository "deb https://cloud.r-project.org/bin/linux/ubuntu $(lsb_release -cs)-cran40/"

On my system, lsb_release -cs returns vera, which is not on the list of supported packages.

How to fix

You can try to use the supported release which is closest to your actual release. So for me, this is jammy instead of vera.

Easiest for me via the graphical Package Source Manager of my system. The R-Project repo is listed under "additional sources". Edit the ppa repo address to end with <your desired officially supported release>-cran40/, e.g.

……/ubuntu jammy-cran40/

(before, it was: vera-cran40/ or in your case kinetic-cran40/ which obviously can not work if you look at the list of supported releases)