curl -o /dev/null "http://webtests.100percent.info/100mb.test" [ $? -eq 0 ] && exit 0 curl -o /dev/null "http://speedtest.sea01.softlayer.com/downloads/test100.zip" [ $? -eq 0 ] && exit 0 curl -o /dev/null "http://speedtest.qsc.de/1GB.qsc" [ $? -eq 0 ] && exit 0 # more test urls: https://raw.githubusercontent.com/blackdotsh/curl-speedtest/master/speedtest.sh