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ruby-on-railsrubyruby-enterprise-edition

Determine ruby version from within Rails

Is there a way to determine what version of Ruby is running from within Rails (either on the web or through script/console)? I have Ruby 1.8.6 installed but I've also installed Ruby Enterprise Edition 1.8.7-20090928 and want to ensure that it's using the right installation.

Solution

  • Use this global constant:

    RUBY_VERSION

    Other relevant global constants include:

    RUBY_PATCHLEVEL
RUBY_PLATFORM
RUBY_RELEASE_DATE

    Usage example via irb session:

    irb(main):001:0> RUBY_VERSION
=> "1.8.7"