Console

$ bundle

# my_console.rb
class MyConsole
  include Console

  define_cmd(:rand, "puts random number") do |max = 100|
    puts rand(max.to_i)
  end

  define_cmd(:incr, "increment number") do |incrby = 1|
    @number ||= 0
    puts @number += incrby.to_i
  end
end

MyConsole.new.start("my-console > ", "Use 'help' show all commands")

$ ruby my_console.rb
Use 'help' show all commands
my-console > help
  help: show all commands
  exit: exit console
  rand: puts random number
  incr: increment number
my-console > rand
23
my-console > rand 10
4
my-console > rand 10100
2492
my-console > incr
1
my-console > incr 3
4
my-console > incr
5
my-console > exit
$