Can you have multiple versions of Ruby installed?

How do I use multiple versions of Ruby?

Using rbenv To Manage Multiple Ruby Versions

  1. Install. Upgrade or install ruby-build: …
  2. Add Ons. The plugin rbenv-bundler makes it possible to not have to type bundle exec in front of every command. …
  3. Check Local Versions. …
  4. Check Installable Versions. …
  5. Install A Ruby. …
  6. Use The Ruby.

How do I install multiple Ruby versions on Windows?

If you’re trying to run multiple Ruby versions on Windows you should give uru a try.

  1. Step 1: Install uru. First, download and install uru. …
  2. Step 2: Install Ruby. …
  3. Step 3: ​Register your Ruby Installations with uru. …
  4. Step 4: Install Ruby Windows DevKit. …
  5. Step 5: Enjoy Hacking in Ruby.

How can I change my ruby version?

Ruby versions (updating)

  1. Upgrade ruby (using rvm) sudo rvm get head. …
  2. Install bundler. gem install bundler.
  3. Go to application root directory and install gems. cd APPLICATION_ROOT. …
  4. Install Easy Redmine. rake easyproject:install RAILS_ENV=production.
  5. You may also need to change the ruby version in a startup script.
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How do I install a specific version of Ruby?

Get started with rbenv

  1. List the installed Ruby versions. To list the installed Ruby versions in your machine with rbenv, run the following command: rbenv version. …
  2. Install a Ruby version. To install a new Ruby version, use the rbenv install command: rbenv install VERSION. …
  3. Use a specific Ruby version for a project.

How does Ruby version work?

ruby-version is read automatically, and you’re automatically switched to the correct version of Ruby before you start working. (These examples are from a MacOS machine).

How do I see all the versions of Ruby?

Check via the ruby –version command in terminal. Then let’s list all the Ruby packages available to install. This will display all the known Ruby versions. The list might be a little long for your terminal, so simply scroll to the top part where the #MRI Rubies are listed.

What is Rbenv and RVM?

Both rbenv and RVM are Ruby version management tool. RVM is used to manage and install different versions of Ruby and gemsets on system where Rbenv is a lightweight Ruby version management tool. … Compared to RVM, rbenv does not manage gemsets nor install different Ruby versions.

What is Rbenv?

rbenv is a tool that lets you install and run multiple versions of Ruby side-by-side. It’s a simple, lightweight alternative to RVM that focuses solely on managing multiple Ruby environments. Each version of Ruby is installed in the ~/. rbenv/versions directory.

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:

  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.
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How do I install an old ruby on Termux?

2 Answers

  1. Install gawk, curl and tar packages: apt install curl gawk tar.
  2. Go to rvm.io site and just copy ‘Install RVM’ command, look’ like: …
  3. Add this line [[ -s “$HOME/.rvm/scripts/rvm” ]] && . “$ …
  4. Now your shell must writing a syntax PS problem, just open rvm script and edit it:

How do I change Ruby version in rails?

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 install a specific version of bundler?

How to update the bundler version in a Gemfile. lock

  1. Install the latest bundler version: gem install bundler Fetching bundler-2.1.2.gem Successfully installed bundler-2.1.2 1 gem installed.
  2. Update the bundler version in you Gemfile.lock : bundle _2.1.2_ update –bundler.

How do you check Ruby is installed or not?

Use ruby -v in command prompt. if it shows the version installed on the system. then it means Ruby is installed on your system.

How can I use an older version of Ruby?

To use any of the versions, simply type rvm <version> or rvm use <version> and to know which Ruby you are currently using type the command below. You should now see the Ruby version you chose previously.