RVM & Essential Rails Development Tools
summary
Covers concrete setup and commands: use Homebrew to install Node and Pow, run rvm install 1.9.3 and create isolated gemsets to avoid version conflicts, link apps into Pow with pow link or use Powder to auto-install, drop a breakpoint with binding.pry to ls, cd and edit code live, and lock dependencies with Bundler using bundle exec rake and the tilde constraint (~>) so updates don’t jump minor versions. Practical, command-focused workflow that just works.
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