Rails4 Web installation

Choose Ubuntu12.04 32bit, no 64bit for saving memory.
After installed RVM, you can read:
http://ruby.taobao.org

$ aptitude install postgresql-9.1

Follow https://github.com/gazeldx/mystory/wiki/Postresql

create user root
$ sudo -u postgres createuser root

$ rake db:setup

$ crontab -e