BlackBuntu's Hosts Defense

#!/bin/bash
#  ,___
#  ¡  _`    BlackBuntu's Hosts Defense
#  ª_/()    noes1s
#  |\` `,   http://pastebin.com/u/noes1s
# _·'   l   CC BY-SA 3.0

#__________________________________________________________
# 127.0.0.1 DEFENSE (http://winhelp2002.mvps.org/hosts.htm)
cp /etc/hosts /etc/hosts.bak
cp /etc/hosts /tmp/hosts
wget http://winhelp2002.mvps.org/hosts.txt -O- >> /tmp/hosts
cat /tmp/hosts |awk ' !x[$0]++' > /tmp/newhosts
sudo mv /tmp/newhosts /etc/hosts