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#!/bin/sh
if [ $# -lt 4 ];then
echo usage: ident.sh our-host their-host 113 their-port our-port
exit 1
fi
REMOTE_PORT="$4"
SERVER_PORT="$5"
IDENT_PORT="$3"
REMOTE_ADDR="$2"
SERVER_ADDR="$1"
username="$(printf "%s, %s\r\n" "$REMOTE_PORT" "$SERVER_PORT" | (ncat -s "$SERVER_ADDR" "$REMOTE_ADDR" "$IDENT_PORT" 2>/dev/null || echo 'ERROR:ERROR:ERROR:ERROR') | tr -d '\r' | cut -d: -f4)"
if [ "$username" ];then
printf "%s\n" "$username"
else
exit 1
fi
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