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| #! /bin/sh | |
| gfwlist="/opt/etc/domain_gfwlist.txt" | |
| polluted_domain="/opt/etc/polluted_domain.txt" | |
| while read host; do | |
| dig +trace +tries=1 +time=1 $host | |
| if [ $(dig +trace +tries=1 +time=1 $host | wc -l) -eq 21 ]; then | |
| echo $host >> $polluted_domain | |
| fi | |
| done < $gfwlist |
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