rr

#!/usr/bin/env ruby
# Quick and dirty FSEvent watcher.
# Example:
#   rr spec/lib/foo lib/foo  'spec spec/lib/foo/*_spec.rb'
#
# Will watch the spec/lib directory for any changes, and run the given command for each change,
# dumping the output to STDOUT.

require 'rubygems'
require 'rb-fsevent'

dirs = ARGV[0..-2]
cmd  = ARGV.last

puts "Watching: #{dirs.join(' , ')}"
puts "Will Run: #{cmd}"

fsevent = FSEvent.new
fsevent.watch dirs, :latency => 5, :no_defer => true do |directories|
  puts "Detected change..."
  system(cmd)
end
fsevent.run