intial import

ips.txt

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+192.168.0.1

ping_test.rb

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+#!/usr/bin/ruby
+require "rubygems"
+require 'net/ping'
+
+tcp = Net::Ping::ICMP.new
+#Read in the ips
+IP_LIST = "ips.txt"
+ips = Array.new
+File.open(IP_LIST, "r") do |infile|
+  while (line = infile.gets)
+    unless line.index('#') == 0
+    puts "Adding ip #{line}"
+    ips << line.chomp
+  end
+  end
+end
+
+
+ips.each do |ip|
+   if tcp.ping?(ip)
+     ips.delete(ip)
+     puts "Remove #{ip} from list because it was found"
+   end
+end
+
+
+
+File.open(IP_LIST, 'w') do |outfile|  
+  ips.each do |ip|
+    puts ip
+    outfile.puts ip
+  end
+end
+
+
+
+