rsync+watcher.rb

#!/usr/bin/ruby
require 'osx/foundation'
OSX.require_framework '/System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework'
include OSX

$d=File.basename Dir.pwd
Dir.chdir '..'

fsevents_cb = proc do |stream, ctx, numEvents, paths, marks, eventIDs|
  system "rsync -L -C --delete -rt --rsh='ssh -p 2222' --exclude 'public/bundles' '#{$d}' 'eanderson@localhost:/home/eanderson/sandbox/'"
  system "growlnotify -m 'Synced #{numEvents} files'"
end

stream = FSEventStreamCreate(
  KCFAllocatorDefault,
  fsevents_cb,
  nil,
  [$d],
  KFSEventStreamEventIdSinceNow,
  1.0,
  0)

die "Failed to create the FSEventStream" unless stream

FSEventStreamScheduleWithRunLoop(
  stream,
  CFRunLoopGetCurrent(),
  KCFRunLoopDefaultMode)

die "Failed to start the FSEventStream" unless FSEventStreamStart(stream)

system "rsync -L -C --delete -rt --rsh='ssh -p 2222' --exclude 'public/bundles' '#{$d}' 'eanderson@localhost:/home/eanderson/sandbox/'"

CFRunLoopRun()

Added a growlnotify call and personalized rsync call