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' -t 'Time Machine' -m '#{escapedString}'`
	end
}

com.cbowns.tmgrowl.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>Label</key>
	<string>com.cbowns.tmgrowl</string>
	<key>ProgramArguments</key>
	<array>
		<string>/Users/cbowns/Development/TM-Growl/backup_growl.rb</string>
	</array>
	<key>LimitLoadToSessionType</key>
	<string>Aqua</string>
	<key>KeepAlive</key>
	<true/>
</dict>
</plist>