Ruby interpreters

pry

Coloured interpreter with autocomplete.

pry                           # start pry interpreter
ruby -r pry -e 'binding.pry'  # start pry interpreter from specific ruby interp

See ruby pry.

iruby

ipython with ruby kernel.

See ruby iruby.

irb

A nice interpreter for ruby.

See ruby irb.

ruby -e

Ruby's interpreter is irb. It is important to note that every command issued in ruby has a return value. If a return value is not specified, the nil object will be returned instead.

ruby -e 'loop { p eval gets }'    ## a dirty ruby REPL