RVM

How to test your gem against multiple Ruby versions on CircleCI
It's much easier on Travis. But sometimes, you don't have a choice.
August 15, 2016

Making RVM play nicely with system scripts
Situation: you have a Rails app, which uses RVM and specifies its Ruby version with a .ruby-version file. You want to use that app in a system script, such as, a Cron job, or start from an init.d script, or any other place that’s not a user shell. And it doesn’t work, failing with strange error messages.
August 5, 2013

PROTIP: fully qualify Ruby version in .rvmrc
In case you didn’t know (I didn’t), when you write
March 14, 2012

Установка Ruby 1.9 на Lion через RVM
Проблема: в OSX Lion стандартным компилятором C++ стал Clang, заменив собой GCC. Clang по сравнению с GCC довольно сырой, кроме того, им не компилируется добрая половина расширений Ruby.
November 8, 2011

Устранение конфликта версий Rack на Passenger + Bundler +RVM
Последний раз для себя пишу:
October 23, 2011