Installing Ruby 1.9.3 In Ubuntu 12.04

Do note that the ruby1.9.1 package is for Ruby 1.9.3 (with Ubuntu 12.04). The version number at the end of the package name is for the ABI version of Ruby (1.9.1) that the package covers.

1. Install ruby1.9.1 package for the Ruby language (also installs the libruby1.9.1 package that contains the standard Ruby library)
2. Install ruby1.9.1-dev package in order to install gems that use native extensions

Installing Rails 3.2.3 In Ubuntu 10.04

Ruby needs to be installed before installing Rails. It is highly recommended that Ruby 1.9.2 or greater is used.

1. Install Rails as a Ruby Gem – gem install rails -v 3.2.3
2. Add the following PPA as a package repository – ppa:chris-lea/node.js
3. Install the required python-software-properties package
4. Update the package manager
5. Install the nodejs package
6. Install sqlite3 package
7. Install libsqlite3-dev package
8. Install the sqlite3 gem – gem install sqlite3 -v 1.3.5

Notes

It is highly recommended that the Rails documentation is generated in order to have an offline Rails API reference. Do the following to create the API reference:

1. In your home directory run this command – rails new sample_app
2. Navigate to the newly created directory
3. Run the following command to generate the documentation – rake doc:rails
4. Move the generated documentation from doc/api to your Documents directory
5. Rename the moved documentation directory to rails-3.2.3-api-doc
6. In the rails-3.2.3-api-doc directory create a shortcut to index.html on your desktop, or view index.html in the web browser and bookmark it

Installing Ruby 1.9.3 In Ubuntu 10.04

Prerequisites for installing Ruby 1.9.3 via RVM are that GIT and Curl is installed.

Installing RVM

1. Download and run RVM install script - sudo bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer )
2. Add all users who need to use Ruby to the RVM group
3. Logout and login
4. Update RVM so that the rvm command can be run - rvmsudo rvm get head
5. Reload the terminal (shell) - source ~/.profile
6. Test to see if RVM was installed and configured properly - type rvm | head -1

          Terminal should output the following, rvm is a function

Installing Ruby 1.9.3

1. Install Ruby 1.9.3 – rvm install 1.9.3
2. Set the default version of Ruby to use to 1.9.3 – rvm use 1.9.3
3. Test to see if the Ruby interpreter runs with the correct version – ruby -v

Installing OpenSSL And Readline Packages

1. Install libssl-dev Ubuntu package
2. Install OpenSSL RVM package - rvm pkg install openssl
3. Reinstall Ruby with OpenSSL support - rvm reinstall 1.9.3 --with-openssl-dir=$rvm_path/usr
4. Install libreadline6-dev Ubuntu package
5. Install Readline RVM package - rvm pkg install readline
6. Reinstall Ruby with Readline support - rvm reinstall 1.9.3 --with-readline-dir=$rvm_path/usr

Notes

Before starting on the installation of RVM you may need to change a setting in Gnome Terminal if it is used. In Gnome Terminal goto Edit → Profile Preferences. Within the shown dialog select Title and Command tab. Ensure that Run command as login shell is checked.