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


