eulaurarien/resolve_subdomains.sh

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#!/usr/bin/env bash
# Resolve the CNAME chain of all the known subdomains for later analysis
echo "Compiling subdomain lists..." > /dev/stderr
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pv subdomains/*.list | sort -u > temp/all_subdomains.list
# Sort by last character to utilize the DNS server caching mechanism
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pv temp/all_subdomains.list | rev | sort | rev > temp/all_subdomains_reversort.list
./resolve_subdomains.py --input temp/all_subdomains_reversort.list --output temp/all_resolved.csv
sort -u temp/all_resolved.csv > temp/all_resolved_sorted.csv