I\'m going through the rails by example tutorial.
Its seems that every time I close terminal rails defaults back to 2.3.5 & I have to go through the process of insta
Try uninstalling the rails gem:
gem uninstall rails
If you are prompted to select a version, select 2.3.5 and leave the 3.0.3 version intact.
P.S: Are you using RVM? If not, I would highly recommend it.