#!/usr/bin/env bash set -eu # Close any previous instances script_name=${BASH_SOURCE[0]} for pid in $(pidof -x $script_name); do if [ $pid != $$ ]; then kill -15 $pid 2> /dev/null wait $pid 2> /dev/null fi done trap exit SIGINT SIGTERM # Serve the page HTML="

$2

" RESPONSE="HTTP/1.1 200 OK\r\nConnection: close\r\n\r\n$HTML\r\n" while { echo -en "$RESPONSE"; } | nc -lN "${1:-8080}"; do echo "================================================" done