r profile.site change options permanently

It seems the following link points to an approach, however, it does not work well. 

http://cran.r-project.org/doc/manuals/R-intro.html#Customizing-the-environment

So at least this file can be changed for this purpose, 

library/base/R/Rprofile 

a couple tips for mac

terminal color

http://osxdaily.com/2012/02/21/add-color-to-the-terminal-in-mac-os-x/

export CLICOLOR=1
export LSCOLORS=GxFxCxDxBxegedabagaced

install wget

./configure --with-ssl=openssl 

make 

sudo make install 

short cuts

http://support.apple.com/kb/HT1343

in particular: ctrl E and ctrl A might be helpful sometimes