Variable: org-babel-ruby-command
org-babel-ruby-command is a variable defined in ob-ruby.el.gz.
Value
"ruby"
Documentation
Name of command to use for executing ruby code.
It's possible to override it by using a header argument :ruby
Source Code
;; Defined in /usr/src/emacs/lisp/org/ob-ruby.el.gz
(defvar org-babel-ruby-command "ruby"
"Name of command to use for executing ruby code.
It's possible to override it by using a header argument `:ruby'")