One-shot HTTP webserver to serve file contents using netcat

servefile.sh

#!/bin/bash

if [[ $# -eq 0 ]]; then
    echo "Usage: ./servefile.sh <file to serve>"
    echo "Ctrl+C to exit"
    exit 1
fi

FILE=$1

while true; do
  { echo -ne "HTTP/1.0 200 OK\r\nContent-Length: $(wc -c < $FILE)\r\n\r\n"; cat $FILE; } | nc -l 4477;
  test $? -gt 128 && break;
done