defaults write com.apple.Safari CustomUserAgent "'Mozilla/5.0 (iPad; CPU OS 6_1_3 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10B329 Safari/8536.25'"
defaults write com.apple.Safari CustomUserAgent "'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_0) AppleWebKit/537.71 (KHTML, like Gecko) Version/7.0 Safari/537.71'"