We need to install Ruby on Ubuntu, it means we will install it.
Installing Ruby through rbenv, variant 1
This variant describes the Ruby installation via rbenv
cd ~ git clone https://github.com/rbenv/rbenv.git ~/.rbenv echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc echo 'eval "$(rbenv init -)"' >> ~/.bashrc exec $SHELL git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bashrc exec $SHELL git clone https://github.com/rbenv/rbenv-gem-rehash.git ~/.rbenv/plugins/rbenv-gem-rehash rbenv install 2.3.1 rbenv global 2.3.1 ruby -v
Install the package management manager:
gem install bundler
After the installation or change version of Ruby and also when change gem you need run rehash:
rbenv rehash
Installing Ruby through RVM, variant 2
This variant describes the installation of Ruby through RVM
sudo apt-get install libgdbm-dev libncurses5-dev automake libtool bison libffi-dev gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 curl -sSL https://get.rvm.io | bash -s stable source ~/.rvm/scripts/rvm rvm install 2.3.1 rvm use 2.3.1 --default ruby -v
Install the package management manager:
gem install bundler
Installing Rails
Since Rails comes with a large number of dependencies, we need to set Javascript runtime environment such as NodeJS, Installing Node.js and NPM in Ubuntu
Installing Rails:
gem install rails -v 4.2.6
If you are using rbenv, you need to run the following command to make available Rails:
rbenv rehash
To check whether you are correctly done everything, you need to run the rails -v:
rails -v # Rails 4.2.6
That's all