Script for getting the MAC adreess of a large set of network computers.

mac.rb

#!/usr/bin/ruby
ipconfig = `ifconfig`

interface = /(eth\d)/.match(ipconfig)
mac = /([0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2}:[0-9a-f]{2})/.match(ipconfig)

host = `hostname`
f = File.open("Macaddresses.txt", 'a') # This file should be on a share that all machines can access.

f << "#{host.chomp("\n")}"
f << " #{mac[0]}\n"

f.close