9 lines
304 B
Plaintext
9 lines
304 B
Plaintext
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#!/bin/bash
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# FILE: wgapi:back/lib/ns/update/rev_ipv4
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# DESCRIPTION: Returns the rDNS reversed version of an IPv4 address
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# USAGE: rev_ipv4 10.2.0.1
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# OUTPUT: 1.0.2.10.in-addr.arpa
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[ "$#" == "1" ] || exit
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printf "${1}" | awk -F. '{print $4"."$3"." $2"."$1}' | sed 's/$/.in-addr.arpa/'
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