Install R-Base on Ubuntu 12.04 LTS Precise

R is a free software environment for statistical computation and graphics. It consists of a language plus a run-time environment with graphics, a debugger, access to certain system functions, and the ability to run programs stored in script files. Below is steps to installing this on a Ubuntu 12.04 64bit OS Step 1: Uninstall Previous R-base installation sudo apt-get remove r-base-core Step 2: Update Sources.List File – Edit the sources.list file sudo gedit /etc/apt/sources.