How do I use a different version of 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.

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 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.

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.
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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 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.

How do I switch between rails versions?

In Windows: open that “rails” file with text editor you will see —– version = “>= 0” (which means: it opens the highest version of rails, which exist in your ruby gems)

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.

How do I check my ruby version?

“how to check ruby version” Code Answer’s

  1. // Command line:
  2. $ ruby -v.
  3. // Within irb type “RUBY_VERSION”
  4. # => “2.4.1”
  5. // If using RVM:
  6. $ rvm current.

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:
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How do I use 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.

How do you update a gem to a specific version?

This will work if the gem has no shared dependencies with other gems.

  1. Find out the version you want to update to.
  2. Add that version explicitly to the Gemfile with , ‘=1.2.3’
  3. Run bundle install.
  4. Remove the explicit version number again.
  5. Run bundle install once more.

How do I specify a gem version?

There are several ways to specify gem versions:

  1. Use a specific version: gem “name-of-gem”, “1.0” . …
  2. Use a version operator: gem “name-of-gem”, “>1.0” . …
  3. Use that weird squiggly-stabby operator: gem “name-of-gem”, “~>1.3” . …
  4. Use a compound requirement: gem “name-of-gem”, “~>2.2”, “>=2.2.