echo "127.0.0.1 facebook.com twitter.com ycombinator.com youtube.com" >> /etc/hosts echo "127.0.0.1 facebook.com twitter.com ycombinator.com youtube.com" >> /etc/hostsecho 127.0.0.1 facebook.com twitter.com ycombinator.com youtube.com>>"%WINDIR%\System32\drivers\etc\hosts"