Evaluating One-Off Commands
ruby
Written May 12, 2015
When I need to quickly test something out in Ruby, I will often reach for
irb. However, there is an even quicker way to send a line of code to
ruby for evaluation. Use the ruby binary with the -e flag followed
by your line of ruby. For instance,
$ ruby -e 'puts Class.ancestors'
[Class, Module, Object, Kernel, BasicObject]