How do I change Ruby version in Ubuntu?

How do I change Ruby version in Linux?

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 ).

How do I change the default Ruby in Ubuntu?

Make sure RVM and Ruby are up-to-date:

  1. Check your RVM version: rvm –version.
  2. Upgrade RVM (if desired): rvm get stable.
  3. Check your Ruby version: ruby –version.
  4. Upgrade Ruby (if desired): rvm install ruby-2.7. …
  5. Set the default Ruby version: rvm –default use 2.7.

How do I use another 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 change Ruby to Rbenv?

2.1 Basic GitHub Checkout

  1. Add ~/. rbenv/bin to your $PATH for access to the rbenv command-line utility. …
  2. Add rbenv init to your shell to enable shims and autocompletion. …
  3. Restart your shell so the path changes take effect. …
  4. Install Ruby versions into ~/.rbenv/versions . …
  5. Rebuild the shim binaries.
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How do I change RVM to Ruby version?

Examples of using RVM

  1. RVM version. …
  2. Use a particular Ruby. …
  3. List Ruby interpreters available for installation. …
  4. List Ruby interpreters you’ve already installed. …
  5. Equivalent to “rvm use 2.1.1”, due to defaults. …
  6. Switch to the system user gems directory. …
  7. Use the user set default ruby. …
  8. Use the system ruby (as if no rvm)

How do I check Ruby version?

The ruby version 1.8. 7 seems to be your system ruby. You can find more details about rvm here: Open the website and scroll down, you will see a few helpful links. “Setting up default rubies” for example could help you.

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 change RubyMine to Ruby?

When you switch to another project, RubyMine will give you inspections and alike using that project’s Ruby settings.

RubyMine: Set specific Ruby version per project

  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 change my default RVM?

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.

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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.


What is a Ruby Gem programming?

RubyGems is a package manager for the Ruby programming language that provides a standard format for distributing Ruby programs and libraries (in a self-contained format called a “gem”), a tool designed to easily manage the installation of gems, and a server for distributing them.

How do I change the Rails version in Ruby?

For each version you need to do these steps:

  1. Change the Rails version in the Gemfile.
  2. gem update.
  3. rails app:update.
  4. Apply all changes from the upgrade guide.
  5. Run your tests.
  6. Fix all failing tests.
  7. Fix all obsolete messages.


How do I upgrade my Ruby-build?

To update ruby-build simply cd into the folder with cd ~/. rbenv/plugins/ruby-build and pull the latest version by running git pull . Once the pull request is complete, you should be able to run rbenv install -l and see a list of the latest Ruby versions available for you to install.

How do I change Ruby version in Windows?

Execute the uru ls command and check that ruby is registered in uru. Execute the uru 2410p364 command to switch to this ruby 2.4. 10. Execute the ruby -v command to check if the ruby version has changed.

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How do I uninstall all versions of Ruby?

Any gems that you install while using an RVM’s ruby version, is self contained in that version. However there may come a time when you no longer want to use a particular ruby version and want to delete it along with all it’s gems. Then this can be done using the “remove” command.

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