Netstat loop to log the udp out to port 1

netstat_loop.rb

#!/bin/ruby

while (true)
	f = IO.popen('netstat -anp udp')
	found = false
	while (line = f.gets)
		linesplit = line.split
		if (/udp/ =~ linesplit[0])
			local = linesplit[3]
			foreign = linesplit[4]
			port = foreign.split(".").last
			if (port == "1")
				found = true
				print local + " " + foreign + "\n"
			end
		end 
	end
	f.close
	if (found)
		puts Time.now
	end
	sleep(5)
end

Run with

ruby netstat.rb >/tmp/netstat.log &