various Gopher-related utils
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#!/bin/sh
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##
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## validate a gophermap -- just pipe in the file
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##
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## (c) 2018 Vincenzo 'KatolaZ' Nicosia <katolaz@freaknet.org>
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##
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[ -z "$(cat ${1:-/dev/stdin} | sed -n -E -e '/(^[0-9+gIThis].* .* .* |^\.\r$)/! =' \
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| tr '\n' ' ' | tee /dev/stderr )" ] && exit 0
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echo && exit 1
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