gistfile1.rb

#terminal 1

duo:~ mas$ irb 
irb(main):001:0> require 'drb/drb'
=> true
irb(main):002:0> DRb.start_service
ro => #<DRb::DRbServer:0...
irb(main):003:0> ro = DRbObject.new_with_uri('druby://localhost:54300')
=> #<DRb::DRbObject...
irb(main):004:0> ro[1] = 'Hello, World.'
=> "Hello, World."
irb(main):005:0> ro[1]
=> "Hello, World."
irb(main):006:0> ro[1] = nil
=> nil
irb(main):007:0> ro[1]
=> nil

gistfile2.rb

# terminai 2

duo:~ mas$ irb 
irb(main):001:0> require 'drb/drb'
=> true
irb(main):002:0> DRb.start_service
ro => #<DRb::DRbServer:0...
irb(main):003:0> ro = DRbObject.new_with_uri('druby://localhost:54300')
=> #<DRb::DRbObject...
irb(main):004:0> ro[1]
=> "Hello, World."
irb(main):006:0> ro[2] = 'Hello, Again.'
=> "Hello, Again."

hash.rb

require 'drb/drb'

DRb.start_service('druby://localhost:54300', Hash.new)
while true
  sleep 1
end