/etc/profile system-wide configuration file for the bash and sh shells ~/.profile executed every time a new shell is created, such as when you open a new Terminal window ~/.bash_logout executed when you log out from a shell

from http://onlamp.com/pub/a/mac/2004/02/24/bash.html

Reload by . ~/.bashrc

from http://ubuntuforums.org/showthread.php?t=392114