Installing R

1. Download R from http://www.r-project.org/.
2. Untar the downloaded archive using command: $ tar -xvzf [R-version.tar.gz]
This will create a new directory named ./[R-version] in the current directory.
3. Enter newly created directory: cd [R-version]
4. Issue command: ./configure --prefix=/path/to/install (e.g., /home/afgane/R/[R-version])
In order to link BLAS and CLApack libraries, the following set of commands can be used (the export statements specify desired compiler, also make sure library paths are edited to match current resource):
export CC=icc
export CXX=icpc
./configure --prefix=/store/R/R-2.7.2 --enable-threads=posix --with-blas="-L/opt/intel/cmkl/10.0.011/lib/em64t -lmkl -lguide -lpthread" --with-lapack="-L/opt/intel/cmkl/10.0.011/lib/em64t -lmkl_lapack"
5. Type tow following commands to make and install:
$ make
$ make check
$ make install

Setting up SSH keys for authentication without passwords

1. Log into machine ONE
2. Issue command: ssh-keygen –t rsa
3. Change into ~/.ssh directory
4. Copy contents of file id_rsa.pub from machine ONE to file ~/.ssh/authorized_keys on machine TWO. Note, if this file already exists, simply add a new line to the bottom of it. Furthermore, make sure that the key being copied is all on one line.
5. Change permissions of ~/.ssh/authorized_keys on machine TWO to 700
6. Now, you are able to log in from machine TWO to machine ONE without a password