oneshot - a single-use, single-file web server to serve a file and then shutdown. Share a file directly with a network neighbor-- no third-party needed.

oneshot

#!/bin/bash

USAGE="Usage: $0 file.txt. Start a webserver on port $PORT, serve this file and close the connection.";

# exit if there's an error
set -e

HOSTNAME=`hostname -I | cut -d' ' -f1`; 
PORT=8000


if [ "$#" == "0" ]; then
  echo "$USAGE"
  exit 1
fi

FILE=$1;

echo "Serving $FILE one time at http://$HOSTNAME:$PORT";
{ echo -ne "HTTP/1.0 200 OK\r\nContent-Disposition: attachment;filename="`basename $FILE`"\r\nContent-Length: $(wc -c <$FILE)\r\n\r\n"; cat $FILE; } | nc -l $PORT

# Potential features:
#  * Random open port selection
#  * SSL support (with "sslnetcat", "scnc", or ncat )

For personal use it only. Note it calls the shell with unsanitized input. Only use with your filenames that you provide and trust.