First install the necessary OS packages
sudo -i apt-get install libyaml-dev libreadline-dev libxml2-dev libxslt1-dev libsqlite3-dev libssl-dev libreadline6-dev libncurses5-dev libffi-dev # A lot of fileuploader gems need this apt-get install libmagickcore-dev libmagickwand-dev libmysqlclient-dev # postgre db for Rails projects apt-get install libpq-dev postgresql # Install git apt-get install git
Now using your regular account (no sudo), change to your home directory and install rbenv
git clone https://github.com/rbenv/rbenv.git ~/.rbenv echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
Next install ruby-build plugin to compile and install different versions of Ruby with the help of rbenv
git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
Finally to manage environment variables, which is used to load passwords and secrets into an application at runtime, use the rbenv-vars plugin.
To install the rbenv-vars plugin clone it like ruby-build.
git clone https://github.com/sstephenson/rbenv-vars.git ~/.rbenv/plugins/rbenv-vars