a wget-ish thing with bash sockets

wget.sh

#!/bin/bash

die() {
	echo "usage: $0 [http://]somehost[:port][/blah/blah]" >&2
	echo "    or $0 somehost [port] /blah/blah" >&2
	exit 1
}

case "$#" in
1)
	set -- `echo "$1" | sed -n s/\'/\'\\\'\'/g';
		s=^\(http://\)\?\([a-zA-Z0-9.-]\+\)\(:\([0-9]*\)\)\?\(/.*\)\?$=\2 \5 \4=p
	'`
	test "$1" || {
		echo "$0: can't parse url" >&1
		die
	}
	;;
2)
	set -- "$1" "$2" 80
	;;
3)
	set -- "$1" "$3" "$2"
	;;
*)
	die
	;;
esac

test "$1" && host=$1 || die
test "$2" && path=$2 || path=/
test "$3" && port=$3 || port=80

exec 3<> /dev/tcp/$host/$port 0<&3
(
	echo -ne "GET $path HTTP/1.1\015\012"
	echo -ne "Host: $host\015\012"
	echo -ne "User-Agent: Mozilla/4.0 (compatible; bash/$BASH_VERSION)\015\012"
	echo -ne "Connection: close\015\012"
	echo -ne "\015\012"
) >&3
exec cat