How to Set Up Ruby on Rails on Ubuntu 20.04
In this post, I will discuss how to set up Ruby on Rails on Ubuntu in under an hour.
Not an all-important step because we will run this command later but just to keep it clean early, first type sudo apt-get update into your terminal. This will download an updated package list from all the source repositories.
We are now going to install some dependencies for Ruby and Rails in Node.js and Yarn. First type sudo apt install curl into your terminal.
When this finishes we can add the two repositories using:
curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo “deb https://dl.yarnpkg.com/debian/ stable main” | sudo tee /etc/apt/sources.list.d/yarn.list
Then enter:
sudo apt-get update
sudo apt-get install git-core zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev software-properties-common libffi-dev nodejs yarn
Stop
Type in your password if prompted. Now we can set up Ruby 3.0.2 using rbenv in this guide so enter these code blocks into the terminal:
cd
git clone https://github.com/rbenv/rbenv.git ~/.rbenv
echo ‘export PATH=”$HOME/.rbenv/bin:$PATH”’ >> ~/.bashrc
echo ‘eval “$(rbenv init -)”’ >> ~/.bashrc
exec $SHELL
Second:
git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build
echo ‘export PATH=”$HOME/.rbenv/plugins/ruby-build/bin:$PATH”’ >> ~/.bashrc
exec $SHELL
Stop
If you get something similar to “fatal: destination path ‘/x/y/.rbenv’ already exists and is not an empty..” , then navigate up one level up from /.rbenv. To see any available hidden files type: ls -a. Now delete the .rbenv directory. Run the command pictured above again.
Now run these commands:
rbenv install 3.0.2
rbenv global 3.0.2
ruby -v
Stop
Type gem install bundler. After it completes, type rbenv rehashinto the terminal.
You can generate an SSH key for authentication and add it to your GitHub if you don’t already have one. Configure Git by replacing the next commands with your GitHub account’s listed name and email address:
The returned key should begin with all lowercase letters. You can choose whichever Rails version you would like to use but if you are still following along we are going to use version 6 with the command:
gem install rails -v 6.1.4.1
After this completes, run rbenv rehash again, then lastly rails -v to have the Rails version returned to you. Great job installing Ruby on Rails on Linux, thank you for joining me.
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