Ruby/Rsync is a Ruby library that can syncronize files between remote hosts by wrapping a call to the rsync binary.
Minimal example
require "rsync"
result = Rsync.run("/path/to/src", "/path/to/dest")Complete example
require "rsync"
Rsync.run("/path/to/src", "/path/to/dest") do |result|
  if result.success?
    result.changes.each do |change|
      puts "#{change.filename} (#{change.summary})"
    end
  else
    puts result.error
  end
end


