http://www.xicidaili.com/nn/1 curl -s 'http://www.xicidaili.com/wn' | grep -A 2 '<img' | gawk 'match($0, /([[:digit:].]+)</td>/, m)&&flag!=1{flag=1;printf("%s:", m[1]);next}flag==1 && match($0, /([[:digit:].]+)</td>/, m){print m[1];flag=0;}' | xargs -n1 -I % sh -c "curl -s 'http://1212.ip138.com/ic.asp' -x % && echo % 此代理可用"