Script to display Time Machine progress messages as Growl notifications

backup_growl.rb

#!/usr/bin/ruby
#Just run this script in a terminal window, leaving the window open in the
#background so it can continue to process messages.
IO.popen("syslog -F \'$(Sender): $Message\' -w -k Sender com.apple.backupd") { |syslogIO|
	while (inputString = syslogIO.gets) do
		escapedString = inputString.gsub("'", "\\'")
		`/usr/local/bin/growlnotify -a 'Time Machine' -m '#{escapedString}'`
	end
}

Thanks Chris, I also just added a line to escape single quotes in the message, which was messing up the shell's parsing of the growlnotify command