I'm using Ubuntu 16.04 on Azure Linux Virtual Machine
lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.5 LTS
Release: 16.04
Codename: xenial
The current R version for Rstudio/Rserver is 3.4.4 and I would like to update it to the latest version (i.e. version 3.5.2)
R --version
R version 3.4.4 (2018-03-15) -- "Someone to Lean On"
Copyright (C) 2018 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)
From some reasons, the most common method doesn't work:
apt-get update
apt-get upgrade
So I did some research and find this post on biostars.org
One of the posts says the following codes might work
sudo su
echo "deb https://cloud.r-project.org/bin/linux/ubuntu xenial-cran35/">> /etc/apt/sources.list
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9
apt-get update
apt-get install r-base
apt-get install r-base-dev
However, after apt-get install r-base I'm getting the following error message:
root@VMforR:/usr/local/bin# apt-get install r-base
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
r-base : Depends: r-recommended (= 3.5.2-1xenial) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
I don't understand what "held broken packages" means, and more importantly, how to update the R base?