Pak Jiddat

Read: In the name of thy Lord Who createth, Createth man from a clot. Read: And thy Lord is the Most Bounteous, Who teacheth by the pen, Teacheth man that which he knew not. Nay, but verily man is rebellious That he thinketh himself independent!. Lo! unto thy Lord is the return. (Sura Alalaq 96:8)

Upgrading R from version 3.0 to 3.5

Created On: 28 Jun, 2018: 15:56:03 - Tags : server management | software installation


R is a free software package for statistical computing graphics. It is part of most Linux distributions. However the latest version of R is not always available. To install the latest version of R we need to add the url of a CRAN mirror to a file in /etc/apt/sources.list.d.

CRAN is a network of ftp and web servers that provide upto date information on R such as documentation, source code and news about R development. To install R, we need to issue the commands: apt-get update followed by apt-get install r-base r-base-dev.

To update R to a newer version we need to replace the CRAN url in /etc/apt/sources.list.d, with a url that points to the newer version of R. After that we need to issue the commands: apt-get update followed by apt-get upgrade. Since the new CRAN url requires different package signing keys, we will get an error similar to:

"following signatures couldn't be verified because the public key is not available: NO_PUBKEY"

The solution is to import the package signing keys for the new R package using the command: sudo apt-key adv --keyserver --recv-keys [ley_name], where key_name is the short signature of the missing key as indicated in the error message. After that the apt-get upgrade command should work without problems

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