update chnroute

curl -0 'http://ftp.apnic.net/apnic/stats/apnic/delegated-apnic-latest' | grep ipv4 | grep CN | awk -F| '{ printf("%s/%d ", $4, 32-log($5)/log(2)) }' > /tmp/chnroute.txt

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原文地址：https://www.cnblogs.com/apexchu/p/7794502.html