How to Install Ruby on Ubuntu 18.04

1. Is Ruby installed on Ubuntu?
2. How do I download Ruby on Ubuntu?
3. How do I start Ruby on Rails Ubuntu?
4. Where is Ruby installed Ubuntu?
5. How do I find my ruby path?
6. How do I switch between versions of Ruby?
7. Which version of Ruby should I use?
8. How do I run a Ruby file?
9. How do I start Ruby programming?
10. How do I set up rails?
11. What is Ruby on Rails framework?
12. How do I install a specific version of a gem?

Is Ruby installed on Ubuntu?

Installing Ruby from Ubuntu Repositories

The easiest way to install Ruby on your Ubuntu system is through the apt package manager. At the time of writing, the version in the Ubuntu repositories is 2.5. 1 which is the latest stable version of Ruby.

How do I download Ruby on Ubuntu?

Install Ruby on Ubuntu with APT

1. Step 1: Open the Terminal application. First, we need to open up Terminal. ...
2. Step 2: Update APT. Before we install Ruby, we want to make sure that APT has the latest package lists. ...
3. Step 3: Install Ruby. ...
4. Step 4: Verify the installation.

How do I start Ruby on Rails Ubuntu?

1. Step 1 - Install RVM Ruby Version Manager. ...
2. Step 2 - Install and Configure Ruby. ...
3. Step 3 - Install Nodejs and Yarn. ...
4. Step 4 - Update RubyGem Package Manager. ...
5. Step 5 - Install Ruby on Rails. ...
6. Step 6 - Install and Configure PostgreSQL. ...
7. 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 find my ruby path?

Here are two simple ways to check for it.

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

How do I switch between versions of Ruby?

If you choose rbenv :

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

Which version of Ruby should I use?

Well the very obvious answer would be use the latest and stable version of Ruby. Considering your requests and vision for Ruby, Rails that are being up-grading process suggest to go the latest version of Ruby.

How do I run a Ruby file?

Running a Script

It's easy -- just create a file with the extension . rb , navigate to that file's directory from the command line, and run it using $ ruby filename. rb (the dollar sign is just the command prompt). You'll be able to gets from and puts to the command line now!

How do I start Ruby programming?

Follow these steps:

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

How do I set up rails?

Rails Installation on Windows

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

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 install a specific version of a gem?

Use `gem install -v`

You may already be familiar with gem install , but if you add the -v flag, you can specify the version of the gem to install. Using -v you can specify an exact version or use version comparators.