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December 12, 2017 14:33
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Get A records for a given domain name
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| get_nss () { | |
| dig +aaonly @$(dig +short $(echo $1 | cut -f2- -d.) NS | head -n1) $1 NS | \ | |
| grep -v '^;' | \ | |
| awk '$4 == "NS" {print substr($5, 1, length($5) - 1)}' | sort -u | |
| } | |
| fqdn=google.com | |
| dig +short @$(get_nss $fqdn | head -n1) $fqdn A |
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