Theo Pepler

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HOWTO: ADD A R MIRROR TO YOUR REPOSITORY LIST IN UBUNTU LINUX

1. Search for a CRAN mirror close to you, at http://cran.r-project.org/mirrors.html, and note the mirror address (should look something like, http://star-www.st-andrews.ac.uk/cran/, for the mirror at St Andrews).
2. In a terminal, type
   
   sudo gedit /etc/apt/sources.list
   
   
3. In the sources.list file, add the line
   
   deb http://star-www.st-andrews.ac.uk/cran/bin/linux/ubuntu trusty/
   
   
4. Save the file and exit gedit.
5. In the terminal, type
   
   sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9
   
   (in general: sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys KEYID, where you replace KEYID with the key you need)
   
   Note: If you are using a different CRAN mirror and/or different version of Ubuntu, the line in Step 3 should be changed accordingly.