How do I choose a different version of Ruby?

How do I choose a different version of Ruby?

Selecting a version of Ruby You can use the ruby keyword in your app's Gemfile to specify a specific version of Ruby. Heroku recommends you run the latest Ruby version your app can handle. Ruby 2.5. 1 might not be the latest Ruby version, and is here for demonstration purposes only.

How do I change Ruby version using RVM?

Ruby versioning with Ruby Version Manager (RVM)

1. Install rvm. ...
2. Install another Ruby version using RVM by running: rvm install 2.4.2. ...
3. You can now list the versions of Ruby that are installed by the command below: rvm list.

How do I update my ruby version?

How to upgrade Ruby versions for your Ruby on Rails app

1. Installing the latest Ruby version. ...
2. Updating your Gemfile. ...
3. Obviously if you are reading this in the future then be sure to use the latest versions of each.
4. Installing all the new gems. ...
5. Update your JavaScript packages, too.

What is the current ruby version?

3.0.2 The current stable version is 3.0. 2. Please be sure to read Ruby's License.

How do I change RubyMine to Ruby?

Here is how to switch which Ruby you use in RubyMine.

1. File → Settings (Or press Ctrl+Alt+S )
2. Select "Ruby SDK and Gems" from the left pane.
3. Switch your "Ruby interpreter".

How do I know if I have Ruby Rbenv?

You can see if it is using rbenv by typing which ruby and it should print something out with . rbenv/ whatever. If not you need to set rbenv as your current ruby. You can do that like rbenv global 2.1.

How do I reduce Ruby version?

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

1. Install Ruby 1.8.7 (or locate it on your system if you have it already)
2. Edit your .bash_profile or .bashrc file to update your $PATH so that the 1.8.7 executable is found first. ...
3. 7/bin/ruby.

How do I revert to a previous version of ruby?

Go to your control panel and find the ruby or rails installer. Uninstall it. Go to your file explorer and make sure the folder is gone. Now go to http://rubyinstaller.org/downloads/ and pick an older version.

How do I install a specific version of Ruby?

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.

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.

What's the best way to update ruby version?

• My advice: Decide on how to manage multiple rubies - either use your OS package manager (in your case the apt-get /PPA stuff) OR rvm OR rbenv. For the OS package manager, there should be a way to call ruby with version explicitely (e.g. /usr/bin/ruby1.9.3 ), or research on and call update-alternative.

Is there a way to switch to production Ruby?

• You can still switch to the packaged "production" ruby with rvm use system. Update 2017: Most distros ship with a ruby version installed already, so you probably don't have to install it manually. Run ruby -v or which ruby to see if a ruby interpreter is already installed.

What's the latest version of Ruby on Ubuntu?

• Ruby 1.8 and 1.9 are installed in my Ubuntu machine. I've just installed Ruby 2.0.0 from ppa:brightbox/ruby-ng-experimental to install a bundle which requires 2.0.0. Now all 1.8, 1.9 and 2.0 are installed though I can't tell bundle to use 2.0:

Is it better to upgrade to rails or Ruby?

• A word of advice: Don’t upgrade Ruby versions the same time as a Rails version upgrade! Even if the version of Rails you’re upgrading to requires a certain Ruby version, upgrade and release your Ruby version first–then tackle the Rails upgrade.