ubuntu 12.10 - rvm ruby 1.9.3 and rails 3.2.9 install

update package database:
	sudo apt-get update

install curl which will be use to fetch the RVM script:
	sudo apt-get install curl

With curl installed, we can install RVM with this command(RVM and ruby will be installed in the home directory.):
	curl -L get.rvm.io | bash -s stable --auto

reload the ~/.bash_profile file:
	. ~/.bash_profile

rvm requirements command will tell us what other packages we need to install for Ruby to work:
	rvm requirements

install the required package in the for ruby section, that might look similar(the current might be different.) below:

	sudo apt-get install build-essential openssl libreadline6 libreadline6-dev \
	curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-dev sqlite3 \
	libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison  \
	subversion pkg-config


with rvm install ruby 1.9.3:
	rvm install 1.9.3

to use ruby 1.9.3, run rvm command below:
	rvm use 1.9.3

display the ruby version:
	ruby -v

set as the default version(at the time of install the patchlevel is -p374. the current might be different.
Now whenever we open a new bash session for this user we’ll have Ruby available for us to use.):
	rvm --default use 1.9.3-p374

with rvm install rails:
	gem install rails -v 3.2.9

Create you new ruby on rails project:
	sudo mkdir ~/ruby_project_Name
	sudo chmod -R 777 ~/ruby_project_name
	rails new ruby_project_name

Enter into that directory:
	cd project_name

Turn on the rails server and access it in the browser(http://site_ip_or_hostname:3000):
	rails server

notes:

When running the rails server you encounter missing gem error(like execJs gem), add it in the Gemfile and run bundle install:
	sudo nano ~/ruby_project_name/Gemfile

	add and save:
		gem 'execJS'

	run command to install the gem:
		bundle install

	run rails server again:
		rails server

If you want to install mysql2 gem for your application then install libmysqlclient-dev first.For pg gem install libpq-dev first.

To generate an .rvmrc(per project gemsets) file(run this inside your project directory.):
	rvm use 1.9.3-p374@ruby_project_name --rvmrc --create