how to check ruby version
// Command line:
$ ruby -v
// Within irb type "RUBY_VERSION"
# => "2.4.1"
// If using RVM:
$ rvm current
# => ruby-2.4.1how to check ruby version
// Command line:
$ ruby -v
// Within irb type "RUBY_VERSION"
# => "2.4.1"
// If using RVM:
$ rvm current
# => ruby-2.4.1manage ruby versions
$ curl -fsSL https://github.com/rbenv/rbenv-installer/raw/master/bin/rbenv-doctor | bash
Checking for `rbenv' in PATH: /usr/local/bin/rbenv
Checking for rbenv shims in PATH: OK
Checking `rbenv install' support: /usr/local/bin/rbenv-install (ruby-build 20170523)
Counting installed Ruby versions: none
There aren't any Ruby versions installed under `~/.rbenv/versions'.
You can install Ruby versions like so: rbenv install 2.2.4
Checking RubyGems settings: OK
Auditing installed plugins: OKCopyright © 2021 Codeinu
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