2022-08-29 01:04:37 -06:00
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#!/bin/bash
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# FILE: wgapi:back/lib/ns/update/rev_ipv6
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# DESCRIPTION: Returns the rDNS reversed version of an IPv6 address
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# USAGE: rev_ipv6 ...
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# OUTPUT: ...ip6.arpa
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2022-09-08 21:15:30 -06:00
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# ERRORS:
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# 3: Bad usage
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2022-08-29 01:04:37 -06:00
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# SOURCES: https://stackoverflow.com/a/53674992/
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2022-09-08 21:15:30 -06:00
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[ ${#} -eq 1 ] || exit 3
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<<<"${1}" sed 's/://g;s/^.*$/\n&\n/;tx;:x;s/\(\n.\)\(.*\)\(.\n\)/\3\2\1/;tx;s/\n//g;s/\(.\)/\1./g;s/$/ip6.arpa/'
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