How to Install Ruby on Ubuntu 18.04 LTS

To install Ruby from the default Ubuntu repositories, follow these steps:

First, update the packages index: sudo apt update.
Install Ruby by typing: sudo apt install ruby-full.
To verify that the installation it was successful run the following command which will print the Ruby version: ruby --version.

How do I install Ruby on Ubuntu?
How do I start Ruby on Rails Ubuntu?
Where is Ruby installed Ubuntu?
How do I install Ruby Railties?
How do I find my ruby path?
How do I install the latest version of Ruby on Ubuntu?
How do I set up rails?
How do I download Ruby on Rails Ubuntu?
What is Ruby on Rails framework?
How do I switch between versions of Ruby?
How do I start Ruby programming?
How do I downgrade Ruby Version?

How do I install Ruby on Ubuntu?

Just simply try sudo apt-get remove ruby , Or type sudo apt-get remove ruby and before pressing Enter press Tab multiple times to see what you can remove about ruby.

How do I start Ruby on Rails Ubuntu?

Step 1 - Install RVM Ruby Version Manager. ...
Step 2 - Install and Configure Ruby. ...
Step 3 - Install Nodejs and Yarn. ...
Step 4 - Update RubyGem Package Manager. ...
Step 5 - Install Ruby on Rails. ...
Step 6 - Install and Configure PostgreSQL. ...
Step 7 - Start New Ruby on Rails Project with PostgreSQL Database.

Where is Ruby installed Ubuntu?

Do not use sudo to install gems when Ruby is managed with rbenv. Each Ruby version is installed in the ~/. rbenv/versions directory and writeable by the user.

How do I install Ruby Railties?

Detailed Instructions:

Run update command to update package repositories and get latest package information.
Run the install command with -y flag to quickly install the packages and dependencies. sudo apt-get install -y ruby-railties.
Check the system logs to confirm that there are no related errors.

How do I find my ruby path?

Here are two simple ways to check for it.

In irb. Run irb and type: ...
From command line. Just type ruby -v. ...
In RVM. Are you using RVM? ...
In rbenv. Are you using rbenv? ...
Using which. Do you want to know where your ruby binary is installed? ...
Using gem env.

How do I install the latest version of Ruby on Ubuntu?

To install Ruby from the default Ubuntu repositories, follow these steps:

First, update the packages index: sudo apt update.
Install Ruby by typing: sudo apt install ruby-full.
To verify that the installation it was successful run the following command which will print the Ruby version: ruby --version.

How do I set up rails?

Rails Installation on Windows

Step 1: Check Ruby Version. First, check if you already have Ruby installed. ...
Step 2: Install Ruby. ...
Step 3: Install Rails. ...
Step 4: Check Rails Version. ...
Step 1: Install Prerequisite Dependencies. ...
Step 2: Install rbenv. ...
Step 3: Install Ruby. ...
Step 4: Install Rails.

How do I download Ruby on Rails Ubuntu?

Step 1 - Install RVM (Ruby Version Manager) ...
Step 2 - Setup Ruby Latest Version. ...
Step 3 - Install Nodejs. ...
Step 4 - Configure Ruby Gem. ...
Step 5 - Install Ruby on Rails. ...
Step 6 - Setup PostgreSQL Database for Rails Development. ...
Step 7 - Create Your First App with Rails and PostgreSQL. ...
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What is Ruby on Rails framework?

Ruby on Rails, or Rails, is a server-side web application framework written in Ruby under the MIT License. Rails is a model–view–controller (MVC) framework, providing default structures for a database, a web service, and web pages.

How do I switch between versions of Ruby?

If you choose rbenv :

Follow the all the installation and setup instructions.
Install ruby-build.
Run rbenv install x.x.x where x.x.x is the version (use rbenv install --list to see which ones are available.
Run rbenv global x.x.x to change your global Ruby version.

How do I start Ruby programming?

Follow these steps:

Open your Windows launch screen (or use the Start Menu).
Click the Start Command Prompt with Ruby program. ...
Change your location to the Developer Kit folder. ...
Use Ruby to set up more Ruby tools. ...
Enter the install command and wait for it to complete:

How do I downgrade Ruby Version?

As others have mentioned, its hard to come up with exact solution, in general to downgrade or switch versions for a user:

Install Ruby 1.8.7 (or locate it on your system if you have it already)
Edit your .bash_profile or .bashrc file to update your $PATH so that the 1.8.7 executable is found first. ...
7/bin/ruby.