- How to find the current version of Ruby installed?
$ruby -v or
$ruby --version - How to find the current version of RubyGem installed?
$gem -v or
$gem --version - How to find the current version of Rails installed?
$rails -v or
$rails --version - How to find environment information of RubyGems?
$gem env - How to update the current version of Rails installed?
$sudo gem update rails - How to install rails and its dependencies?
$sudo gem install rails --include-dependencies - How to find the list of plugins installed as part of gem in use?
$gem list --local - [More to come...]
Books I follow(ed) for Ruby are:
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