rvm ruby version

Which version of RVM do I have?
How do I change RVM to Ruby version?
What is Ruby version file?
How do I use a different version of Ruby?
How do I change my default RVM version?
How do I install Ruby 2.6 3?
How do I change the current version of Ruby?
How do I update RVM?
How do I change Ruby version in Ubuntu?
What is Ruby Gemset file?
What is a ruby Gemset?
How do I manage Rails versions?

Which version of RVM do I have?

If its not, then be sure to include the patch level when you specify which Ruby RVM should use when setting a default. RVM updates the known list ($rvm_path/config/db and $rvm_path/config/known) every time you update RVM, so the 'current' version of a Major. Minor (e.g. 2.1.

How do I change RVM to Ruby version?

Ruby versioning with Ruby Version Manager (RVM)

Install rvm. I'll refer you to the RVM installation instructions at this point to get the proper instructions for your OS. ...
Install another Ruby version using RVM by running: rvm install 2.4.2. Where 2.4. ...
You can now list the versions of Ruby that are installed by the command below: rvm list.

What is Ruby version file?

Many Ruby (or Rails) projects will include a simple .ruby-version file, which simply specifies a version number, for example: 2.4.2. Popular tools to help you manage your Ruby version are: Ruby Version Manager (RVM) rbenv.

How do I use a different version of Ruby?

Use rvm use x.x.x --default to change your default 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 change my default RVM version?

If you wish to switch back to your system ruby as default, remember that RVM does not "manage" the system ruby and is "hands off". This means to set the "system" ruby as default, you reset RVM's defaults as follows. Note that "default" is merely implemented as an alias with an especially significant name.

How do I install Ruby 2.6 3?

Rails are the framework to run ruby language.
...
RVM is the Ruby Version Manager helps for installing and managing Ruby language on systems.

Step 1 – Install RVM. ...
Step 2 – List Available Ruby Versions. ...
Step 3 – Install Ruby on Ubuntu. ...
Step 4 – Setup Default Ruby Version. ...
Step 5 – Check Ruby Version. ...
Step 6 – Install Rails.

How do I change the current version of Ruby?

Run ruby -v or which ruby to see if a ruby interpreter is already installed. In your case I would probably deinstall all system rubys ( apt-get purge ... ), remove the PPAs, remove your ~/. rvm and rbenv and start from scratch (install packaged stable ruby, then rvm and use rvm (r.g. rvm install 2.3.

How do I update RVM?

First of all, update your RVM installation by running rvm get stable . To make sure you're running the new RVM version, you'll then need to run rvm reload (or just open a new terminal). Once that's done, you can ask RVM to list the ruby versions available to install by running rvm list known .

How do I change Ruby version in Ubuntu?

To see what Ruby versions you have installed, run rvm ls . To switch between Ruby versions, run rvm use <version_number> (for example, rvm use 2.7. 1 ).

What is Ruby Gemset file?

Gemsets are little libraries for individual projects, where each gem used in the project is stored. You tell Ruby which gems you need for a project, and it stores them in a gemset so you can quickly switch project to project and have all the gems you need (and only the gems you need for each project).

What is a ruby Gemset?

A gemset is just a container you can use to keep gems separate from each other. Creating a gemset per project allows you to change gems (and gem versions) for one project without breaking all your other projects. Each project need only worry about its own gems.

How do I manage Rails versions?

There's nothing you need to do to manage two different Rails versions. The only thing you'll want to do is gem install rails to get the latest version and create your new project with rails new myapp . That will make sure the new project starts with Rails 5.1 (or whatever is the latest at the time).