run_server.sh


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#!/usr/bin/env bash
if [[ "$(id -u)" -ne 0 ]]; then
	echo >&2 "Run with sudo"
	exit 1
fi

echo 1 >/proc/sys/net/ipv4/icmp_echo_ignore_all
trap "echo 0 >/proc/sys/net/ipv4/icmp_echo_ignore_all" EXIT
./server