Unable to update to latest version of R

Question

I am trying to update to R version 3.5.3, by using the R manual. However, when I type this line:

I get a return of command not found.

I tried to add it to my source list as previously suggested, but this does not seem to work. I am trying to do this on a linux system

deb is not a command, check out [here](https://askubuntu.com/questions/233064/why-am-i-getting-command-deb-not-found/233069) — mischva11, Apr 12 '19 at 12:18
also for installing R on ubuntu [here](https://askubuntu.com/questions/1031597/r-3-5-0-for-ubuntu) — mischva11, Apr 12 '19 at 12:21
Just _read_ the appropriate [README](https://cloud.r-project.org/bin/linux/ubuntu/README.html) at the source repository and its mirror -- it has all instructions and detail! — Dirk Eddelbuettel, Apr 12 '19 at 12:34
@DirkEddelbuettel the README is a great resource but it does skip over *how* to add the appropriate `deb` to your `/etc/apt/sources.list` which is seemingly what the OP was struggling with. — Phil, Apr 12 '19 at 17:07

Phil · Answer 1 · 2019-04-12T17:04:04.657

2

Edit: Thanks @Ralf for correction (see comments)

Append the 'deb' line to your sources.list by opening a terminal and typing:

echo "deb https://cloud.r-project.org/bin/linux/ubuntu cosmic-cran35/" | sudo tee -a /etc/apt/sources.list

Install the R-CRAN GPG key to verify what you're installing:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9

Update your package list and install with:

sudo apt update
sudo apt install r-base r-base-dev

edited Apr 12 '19 at 17:04

answered Apr 12 '19 at 12:25

Phil

1

In order to append something to a file you have write access only through `sudo` you need the pattern `echo | sudo tee -a `. – Ralf Stubner Apr 12 '19 at 12:43
It unfortunately returns with 'permission denied', when I try to append the 'deb' line – ksd0295 Apr 12 '19 at 12:53
@RalfStubner I always forget that. Thanks, fixed – Phil Apr 12 '19 at 17:04
I forgot you need to use `tee` with files with root permissions, as @RalfStubner pointed out. Corrected the answer – Phil Apr 12 '19 at 17:05

1 Answers1