Bash netcat server

#!/bin/bash

# The "Arc" challenge done in a horrible way with netcat and bash. :P
# http://arclanguage.org/item?id=722
#
# Point the browser to http://localhost:9000 after running the script.

http200="HTTP/1.0 200 OK
Content-Type: text/html

"

# output submit page

echo "$http200
<form><input type=text name=foo><input type=submit>" | nc -l 9000


# output "click here" and get response
foo=$(echo "$http200
<a href=\"\">click here</a>" | nc -l 9000 | grep -oe "?foo=\(.*\)HTTP" | sed -ne 's/\(^?foo=\|HTTP$\)//gp' | sed -e 's/+/ /g')


echo "$http200
You said: $foo" | nc -l 9000

gistfile2.txt