R and RStudio setup on Ubuntu 12.04.

R_RStudio_ubuntu.sh

### R setup from specific CRAN mirror: cran.cnr.berkeley.edu

## make sure backports is checked in software sources/updates tab
## add repository instructions http://cran.r-project.org/bin/linux/ubuntu/README
sudo gedit /etc/apt/sources.list ## or better from GUI-Synaptic to check correct URL
##  add:
##    deb http://cran.cnr.berkeley.edu/bin/linux/ubuntu precise/

## add secure key required for mirror reporitories
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9

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

### RStudio: download deb-installer (64 bit) and run

## NOTE: better to set library-dir (R) inside user's home,
##   otherwise would need to start RStudio with sudo to update