Usage: ./subfinder [flags] Flags: INPUT: -d, -domain string[] domains to find subdomains for -dL, -list string file containing list of domains for subdomain discovery SOURCE: -s, -sources string[] specific sources to use for discovery (-s crtsh,github). Use -ls to display all available sources. -recursive use only sources that can handle subdomains recursively (e.g. subdomain.domain.tld vs domain.